Here's another article:
http://news.yahoo.com/s/ap/20080422/...bay_craigslist
It sounds like a setup to me. They bought a portion of the interest in craiglist, which is obviously undermining eBay with its free ads, and now they are using some legal maneuver to sue Craigslist based on the fact that they own a minority portion of Craigslist.
I personally haven't used Ebay for years, I prefer Craiglist. It's so easy to list an ad, for free, with them, and buy from people in your own vicinity.