Today I've just stepped into a real cool banner ad in a geek-page that I think it deserves a post.
Peter Blum, according to his web page, is a web control programmer that, after many years building UIs for commercial Windows and Macintosh applications, started to develop and sell commercial products on his own. Its company is a one-person one. Peter creates the documentation and provides the tech support. And he has no complex about it.
In fact, he does his own marketing too.
He has setup a real effective banner campaign based on "sincerity". Take a look at his banner:

It's real cool. I especially like the frame that puts an arrow pointing to the "Corny call to action" :-D
And I bet he's getting good results. Guerrilla marketing once again!
Visit Peter Blum's webpage. I think he's got to enhance the landing page, but I like the real cool and funny banner.