The battle over localized data continues to heat up, and according to rumor's Apple's next weapon against Google, Nokia and the rest could be a partnership with Foursquare. Last week TechCrunch noted a check-in tweeted by Apple SVP Eddy Cue, coincidentally at the same time Foursquare CEO Dennis Crowley happened to be in the San Francisco area. Now, the Wall Street Journal has followed up with its always-helpful "people familiar with the talks" who indicate that yes, the two are in early discussions about sharing data. Currently, iOS features deep ties with Yelp, but Apple could swap in Foursquare an