I'm more impressed from the advertiser perspective. If you look at the page, its a normal adsense block, although it is well blended. The advertiser was very creative in thinking about how and where the ad would be displayed to craft the perfect graphic.
The great part is, the advertiser is effectively stealing users away from the publisher's similar software. The publisher is providing software for free, so they would rather we click the ads, but let this be a warning to affiliates who also serve adsense... someone smart can take your pre-sold visitors and convert them.
The site I spotted this on: www floola com