Has anyone tried AMP Keywords?

I just got an email from Admarketplace (which is used by ebay sellers to advertise their stores on eBay) and they just relaunched AMP Keywords.
http://ampkeywords.com
From what I’ve read, AMP Keywords displays your ppc ads on "the other" search engines (ask.com, looksmart, etc.), while costing less then Google AdWords.
They are currently offering $25 in free clicks when you open a new account, so I was going to try it out, but I wanted to see if anyone here has used AMP Keywords before?

Original post by ViciousSummer