Google Takes Friendly Fire

It's not just Google's(GOOG Quote) rivals that would like to reign in the search giant -- its own partners are starting to test the limits of cooperation.

Over the weekend, The Wall Street Journal reported that Comcast(CMCSA Quote) is negotiating to use Microsoft's(MSFT Quote) search service on its broadband portal, citing people familiar with the matter.

With 15 million unique visitors a month, Comcast is one of the biggest outside sources of searches for Google. And although Comcast expects its cut from the partnership to amount to about $70 million this year, the cable giant believes it should get at least $100 million, according to the article. ...