FYI: I just recently started using blogexplosion.com to help drive traffic to my site but, when I previewed my site, I noticed that the AdSense targeting was way off... They display your site in a frame, and AdSense picks up on topics such as blogs and surfing rather than the content of your page, resulting in whacked out ads. A bit of quick googling revealed the fix... Add this snippet into your AdSense code:
google_page_url = document.location;
This forces AdSense to look at your page, rather than the frame it is displayed in, when deciding which ads to serve.