Comparison shopping: who's next?

After eBay acquired Shopping.com for $620m, now EW Scripps buys Shopzilla for $525m.

So who's next?

Google has Froogle, Yahoo! has Kelkoo (in Europe), CNet has mySimon, Ask Jeeves probably doesn't need it (it has Smart Product Search) and AOL has Pinpointshopping.

So that leaves on the buyer side:
MSN, LookSmart
And on the list of candidates:
Become.com, NexTag, BizRate, SideStep, PriceGrabber, Smarter, Priceflo, ...