When Google and MySpace teamed up in a $900 million online advertising deal last summer, it looked like a marriage made in Web heaven. But MySpace’s interest in striking a separate deal with eBay is holding up the finalization of its pact with Google, the Wall Street Journal reports.

The landmark deal, struck six months ago, gave News Corp. the right to use Google’s search technology on its popular Web site, MySpace, and carry ads brokered by Google. In return, Google would pay News Corp. a minimum of $900 million in shared ad revenue over the next three years — the biggest step taken by the media giant to cash in on the huge traffic visiting the social-networking site.

The paperwork on the deal hasn’t been finalized. The delay doesn’t threaten the $900 million — MySpace installed the Google links on its site in December and began receiving payments from Google in January — but points to MySpace’s online-commerce ambitions. Before it signs a longer document finalizing the agreement, MySpace wants to ensure that the terms originally agreed — as outlined in a hastily drafted deal letter of intent in August — don’t limit its ability to work with third parties such as eBay, according to people familiar with the discussions.

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