Google Base = Goodbye eBay and Craigslist?

Okay, it looks like Google is set to unleash yet another viral service on us. Google Base seems to be a database where anyone can add any type of content, but I bet people are going to be all over this thing as if it was the new, national Craigslist. Think about this for a moment, with Google Base being a free service, and with Google set to launch the Google Wallet online payment service, we might have a free version of eBay/Paypal with Craigslist functionality on our hands - completely ad-supported. In fact, Google even states:

...based on the relevance of your items, they may also be included in the main Google search index and other Google products like Froogle and Google Local.

So I can put up an item for sale, and have it potentially show up when someone searches for that item under Google Local? Sign us up.