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I've spent about 15,000 hours on this site since 1999—more every day.
Your support is greatly appreciated!

AWStats ended; Google Analytics (GA)

DATE USERS Amazon Donations Web Monetization
(began Jan 2021)
Book Sales (from my own database; look at rows from that month) TOTAL
MARCH 2021 84,040 $4.06 $4.55 $4.61 COIL (from me)
$12.21 COIL affiliate bonuses
(initial $4.33 goof that COIL gave me; bonuses from husband/daughter subscriptions, nothing from users-at-large)
$14.51 (2 cat, 3 TeX, 1 Calc main) $39.94
FEBRUARY 2021 86,735 $7.88 $0
(stopped Ko-fi; was causing a page error)
$33.21 (about $4 came from me; there were several ‘sudden’ unexplained payments—perhaps an incentive program?) $14.56 (2 cat, 2 TeX, 1 AlgWeb1, 1 AlgWeb2) $55.65
JANUARY 2021 82,470
(GA now on most pgs)
$10.05 $5.53
(from Ko-fi)
$4.07 (most from me) $35.13 (3 cat, 2 Alg1, 1 CalcSoln, 1 PreCalc1, 1 PreCalc2, 2 TeX, 1 Geom, 1 AlgII) $54.78
DECEMBER 2020 65,400
(GA not on all pgs)
$22.63 $15.97
(includes Ko-fi)
NA $8.00 (2 cat) $46.60
NOVEMBER 2020 67,281
(GA not on all pgs)
$8.68 $0 NA $8.72 (1 CalcSoln, 5 TeX) $17.40
OCTOBER 2020 109,618
(GA not on all pgs)
$3.04 $0 NA $20.61 (1 cat, 1 Alg1, 1 CalcSoln, 1 CalcMain, 1 Alg1Web#2) $23.65
SEPTEMBER 2020 92,250
(GA not on all pgs)
$4.75 $0 NA $19.89 (2 Alg1, 1 CalcMain) $24.64
AUGUST 2020 38,716
(GA not on all pgs)
$8.24 $0 NA $22.03 (4 cat, 1 Alg1, 1 CalcMain) $29.95
JULY 2020 25,643
(GA not on all pgs)
$14.33 $0 NA $15.62 (1 cat, 1 Alg1, 3 TeX) $29.95
JUNE 2020 29,825
(GA not on all pgs)
$1.94 $0 NA $15.56 (4 cat, 1 AlgII, 1 TeX) $17.50
MAY 2020 44,500
(GA not on all pgs)
$4.22 $0 NA $27.26 (4 cat, 1 alg, 1 calc, 1 calc soln, 2 TeX) $31.48


DATE # UNIQUE MONTHLY VISITORS ADS Amazon donations + digital commerce
(less PayPal fees and SendOwl)
Book Sales
(began June 2018)
TOTAL
APRIL 2020 Server stopped AWStats $0 $0.50 $0 $6.16
(1 TeX $1.22
2 CalcSoln $4.94)
$6.66
MARCH 2020 Server stopped AWStats $0 $3.19 $0 $16.80
(1 Alg: $7.87
1 AlgII $2.31
1 Calc $4.15
1 CalcSoln $2.47)
$19.99
FEBRUARY 2020 51,684 $0 $2.74 $0 $20.26
(1 algebra: $7.87
2 Mainstream SQ: $1.54)
1 PreC1 $2.39
1 PreC2 $2.48
1 Geom $1.92
1 AlgWeb1 $1.94
1 AlgWeb2 $2.12)
$23.00
JANUARY 2020 43,838 $0 $4.59 $0 $22.18
(3 cat: $12.00
1 algebra: $7.87
3 Mainstream SQ: $2.31)
$26.77
DECEMBER 2019 32,964 $0 $32.08 $0 $12.92
(1 cat: $4.00
1 algebra: $7.87
1 SQ Bas2: $1.05)
$45.00
NOVEMBER 2019 41,218 $0 $16.63 $0 $15.95
(2 algebra: $11.30
1 calc: $4.15
1 calc soln: $0.50)
$32.58
OCTOBER 2019 55,640 $1.63 (removed AdSense on 10/3/19) $3.63 $0 $7.37
(1 cat: $4.00
1 algWeb2: $2.12
1 MathJax: $1.25)
$12.63
SEPTEMBER 2019 51,976 $11.11 $19.17 $0 $64.68
(8 cat: $31.23
1 alg: $5.52
1 algWeb1: $1.94
2 geom: $3.84
2 alg2: $4.62
1 precalc1: $2.39
3 precalc2: $7.44
1 calc: $4.15
1 SDB2: $1.05
3 MathJax: $2.50)
$94.96
AUGUST 2019 31,992 $6.28 $14.84 $0 $110.07
(22 cat: $88.00
2 algebra: $15.74
2 precalc1: $2.78
1 SDB2: $1.05
2 MathJax: $2.50)
$131.19
JULY 2019 21,588 $6.19 $30.18 $0 $55.74
(10 cat: $40.00
2 algebra: $15.74)
$92.11
JUNE 2019 29,666 $6.21 $18.31 $0 $4.00
(1 original cat book)
$28.52
MAY 2019 50,179 $9.47 $9.62 $0 $48.28
(3 cat: $12.00
3 algebra: $23.61
1 calc soln: $1.68
3 calc main: $10.99)
$67.37
APRIL 2019 53,400 $16.10 $12.08 $0 $12.94
(2 cat: $8.00
2 calc soln: $4.94)
$41.12
MARCH 2019 57,282 $15.34 $43.16 $3.52 (last recurring donation) $10.62
(1 cat: $4.00
1 calculus: $4.15
1 calc soln: $2.47)
$72.64
FEBRUARY 2019 48,374 $16.52 $11.97 $3.52 $15.74
(2 algebra: $15.74)
$47.75
JANUARY 2019 50,606 $16.11 $13.58 $3.52 $27.83
(1 algebra: $7.87
2 cat: $5.77
4 calculus: $11.72
1 calc soln: $2.47)
$61.04
DECEMBER 2018 43,169 $14.23 $13.54 $3.52 $40.97
(2 algebra: $15.74
3 cat: $12.00
2 calculus: $8.29
2 calc soln: $4.94)
$72.26
NOVEMBER 2018 52,457 $17.25 $7.69 $3.52 + $0 - $0 = $3.52
(removed digital products, cancelled SendOwl)
$7.87 + $8.00 + $2.47 = $18.34
(1 algebra: $7.87
2 cat: $8.00
1 calculus soln manual: $2.47)
$46.80
OCTOBER 2018 71,823 $16.46 $30.46 $3.52 + $3.64 - $9.00 = -$1.84 $7.87 + $8.00 = $15.87
(1 algebra: $7.87
2 cat: $8.00)
$60.95
SEPTEMBER 2018 84,073 $26.61 $20.28 $3.52 + $20.46 - $9.00 = $14.98 $15.74 + $8.00 = $23.74
(2 algebra: $15.74
2 cat: $8.00)
$85.61
AUGUST 2018 50,853 $15.71 $13.33 $3.52 + $9.41 - $9.00 = $3.93 $15.74
(2 algebra: $15.74
0 cat: $0.00)
$48.71
JULY 2018 41,252 $11.83 $12.65 $3.52 + $18.21 - $9.00 = $12.73
(switched SendOwl plan)
$25.26
(3 algebra: $21.26
1 cat: $4.00)
$62.47
JUNE 2018 50,534 $14.23 $22.01 $37.72 - $24.00 = $13.72
(includes 1st month of digital sales;
SendOwl costs $24/month
)
$67.74
(2 algebra: $15.74
13 cat: $52.00)
$117.70
MAY 2018 59,310 $18.23 $20.28 $3.52   $42.03
APRIL 2018 55,248 $16.96 $23.98 $8.07   $49.01
MARCH 2018 61,125 $19.27 $36.92 $3.52   $59.71
FEBRUARY 2018 81,069 $28.53 $9.80 $3.52   $41.85
JANUARY 2018 80,552 $14.82 $31.79 $3.52   $50.13
DECEMBER 2017 64,221 $14.66 $42.50 $3.52   $60.68
NOVEMBER 2017 79,329 $20.33 $21.17 $3.52   $45.02
OCTOBER 2017 104,131 $20.58 $32.95 $3.52   $57.05
SEPTEMBER 2017 107,576 $27.46 $16.56 $0.00   $44.02
AUGUST 2017 69,164 $10.09 $20.27 $0.00   $30.36
JULY 2017 46,801 $4.98 $55.24 $0.00   $60.22
JUNE 2017 53,814 $6.39 $33.96 $0.00   $40.35
MAY 2017 63,250 $7.96 $30.11 $0.00   $38.07
APRIL 2017 62,587 $6.90 $34.07 $0.00   $40.97
MARCH 2017 73,284 $7.59 $12.43 $0.00   $20.02
FEBRUARY 2017 74,188 $7.35 $20.14 $0.00   $27.49
JANUARY 2017 68,879 $5.51 $14.11 $9.41   $29.03
DECEMBER 2016 48,690 $8.48 $19.38 $23.97   $51.83
NOVEMBER 2016 57,339 $10.81 $42.89 $0.00   $53.70
OCTOBER 2016 72,067 $12.52 $30.39 $0.00   $42.91
SEPTEMBER 2016 77,426 $12.28 $27.70 $0.00   $39.98
AUGUST 2016 45,074 $9.79 $17.35 $23.97   $51.11
JULY 2016 24,268 $6.10 $38.05 $0.00   $44.15
JUNE 2016 28,693 $5.83 $41.21 $0.00   $47.04
MAY 2016 28,466 $4.64 $37.62 $0.00   $42.26
APRIL 2016 30,172 $4.01
(tiny ads only)
$18.10 $0.00   $22.11
MARCH 2016 33,206 $16.33
(I took all ads off on March 25, 2016)
(I put small ads back on, on April 5, 2016)
$38.94 $0.00   $55.27
FEBRUARY 2016 37,867 $27.70 $15.71 $11.35   $54.76
JANUARY 2016 36,529 $37.08 $16.62 $0.00   $53.70
DECEMBER 2015 27,282 $21.35 $15.15 $0.00   $36.50
NOVEMBER 2015 35,074 $28.33 $20.03 $0.00   $48.36
OCTOBER 2015 46,704 $55.81 $40.85 $0.00   $96.66
SEPTEMBER 2015 55,907 $52.25 $24.73 $0.00   $76.98
AUGUST 2015 31,472 $33.41 $14.54 $0.00   $47.95
JULY 2015 18,499 $13.13 $18.16 $11.35   $42.64
JUNE 2015 25,842 $24.65 $22.24 $4.55   $51.44
MAY 2015 24,954 $20.55 $12.78 $0.00   $33.33
APRIL 2015 24,409 $15.15 $28.57 $0.00   $43.72
MARCH 2015 23,901 $23.82 $29.40 $14.11   $67.33
FEBRUARY 2015 28,139 $28.46 $22.39 $9.41   $60.26
JANUARY 2015 28,754 $28.82 $22.24 $0.00   $51.06
DECEMBER 2014 24,784 $30.54 $19.01 $0.00   $49.55
NOVEMBER 2014 31,391 $27.50 $28.63 $145.05
(My two largest donations to date!
$100 and $50 on the same day!)
  $201.18
OCTOBER 2014 40,024 $40.93 $25.24 $0.00   $66.17
SEPTEMBER 2014 44,716 $53.41 $10.69 $0.00   $64.10
AUGUST 2014 29,357 $22.00 $31.29 $0.00   $53.29
JULY 2014 22,096 $23.05 $23.60 $23.97
(My largest donation ever! $25)
  $70.62
JUNE 2014 29,931 $22.86 $57.17 $0.00   $80.03
MAY 2014 22,013 $16.83 $22.91 $0.00   $39.74
APRIL 2014 16,027 $15.21 $35.15 $0.00   $50.36
MARCH 2014 17,502 $26.46 $11.75 $0.00   $38.21
FEBRUARY 2014 18,580 $27.64 $9.64 $0.00   $37.28
JANUARY 2014 19,920 $26.25 $2.52 $0.00   $28.77
DECEMBER 2013 16,623 $27.81 $13.11 $0.00   $40.92
NOVEMBER 2013 17,838 (updated to MathJax 2.2, then 2.3) $27.31 $3.51 $0.00   $30.82
OCTOBER 2013 25,317 $31.60 $18.07 $0.00   $49.67
SEPTEMBER 2013 28,401 $26.71 $13.21 $0.00   $39.92
AUGUST 2013 17,722 (my failed experiment with removing ads) $3.91 $20.66 $0.00   $24.57
JULY 2013 14,905 $32.83 $20.87 $0.67   $54.37
JUNE 2013 20,367 $49.42 $7.38 $0.00   $56.80
MAY 2013 28,202 $66.92 $16.75 $0.00   $83.67
APRIL 2013 38,791 $82.53 $9.50 $0.00   $92.03
MARCH 2013 47,324 $117.84 $12.86 $38.61   $169.31
FEBRUARY 2013 56,083 $134.88 $4.15 $9.41   $148.44
JANUARY 2013 69,763 $182.81 $31.33 $0.00   $214.14
DECEMBER 2012 55,269 $150.84 $15.55 $6.00   $172.39
NOVEMBER 2012 69,896 $122.23 $13.99 $1.00   $137.22
OCTOBER 2012 106,990 $180.88 $15.30 $0   $196.18
SEPTEMBER 2012 121,176 $207.90 $12.96 $5.10   $225.96
AUGUST 2012 72,114 $79.16 $3.44 $0   $82.60
JULY 2012 53,041 $58.53 $36.89 $0   $95.42
JUNE 2012 71,153 $77.93 $45.89 $0   $123.82
MAY 2012 87,241 $87.45 $21.77 $0   $109.22
APR 2012 79,644 $86.49 $1.48 $0   $87.97
MAR 2012 79,981 $85.47 $2.00 $0   $87.47
FEB 2012 71,616 $108.38 $1.71 $0   $110.09
JAN 2012 77,939 $108.66 $20.49 $0   $129.15