Over 1000 visitors to VIZZ.INFO virtualisation information site

According to Google Analytics there were over 1000 visitors to my VIZZ.INFO site last month !

1.      Firefox 648     51.35%
2.      Internet Explorer       518     41.05%
3.      Safari  38      3.01%
4.      Opera   28      2.22%
5.      Mozilla 21      1.66%
6.      Konqueror       5       0.40%
7.      Camino  2       0.16%
8.      (not set)       1       0.08%
9.      Netscape        1       0.08%

but why is hardly anyone clicking on the Google AdSense ads ?

ALL TIME

fsse     1,181     7     0.59%     $0.80     $0.94
fsse     1,099     6     0.55%     $0.84     $0.93
osde     4,304     9     0.21%     $1.00     $4.29
osde     4,340     9     0.21%     $0.99     $4.29
vizz     3,962     44     1.11%     $0.99     $3.92
vizz     5,474     2     0.04%     $0.06     $0.32
voippix     3,157     14     0.44%     $2.47     $7.79

TOTAL    11,343     116     1.02%     $1.58     $17.88

I just can't seem to break the 2% CTR or $20 barriers !