I use adblock, but when I fired up another browser, I still had three clicks, and the only ads were one typical square block ad, that didn't get in the way at all.
It isn't really a bad thing. He's giving the software away for free. I'm never a fan of the ones that pretend to be the download link (the ad on the left linked to http://www.mac-zip.com/lp/freezip_osx/df?mnag=155060&mnct=45... god knows what kind of stuff you'd get if you downloaded/ran that...)
Interestingly, others seem to be seeing two ads. With Chrome I only get one ad square, the one on the left part of the page. The ad on the right never shows up.
I clicked here: http://www.getpaint.net/download.html
Then I clicked here: http://www.dotpdn.com/downloads/pdn.html
Then here for the file: http://www.dotpdn.com/files/paint.net.4.0.install.zip
I use adblock, but when I fired up another browser, I still had three clicks, and the only ads were one typical square block ad, that didn't get in the way at all.