EBay Inc. is talking to both Yahoo Inc. and Microsoft Corp. to determine whether one of them might be a worthy ally against a common threat: Google Inc., The Wall Street Journal reported.

eBay became alarmed last year when Google launched its classified-advertising service --Google Base-- that competes directly with eBay's online auctions
and other listings.

The alliance would increase EBay's ad spending with its chosen partner and provide access to the wealth of data it has collected about its consumers. The two sides could also more tightly integrate technical aspects of their systems to better cross-promote their businesses.

You can read the full article on today's Wall Street Journal (subscription required).