There's a great news from Google- FINALLY Google Latitude becomes at least a bit social (till today IMHO it was quite a simple/ stupid beta which had no communication features b/w users, no bookmarks, nothing- no motivation to use it at all). Today Google declared in their Google Mobile official Blog-
Do more with Google Latitude!
When we launched Google Latitude a couple of months ago, we were flooded with feature suggestions. One frequent request was to allow you to share your location with even more people and not just your Latitude friends. Today, we're launching two applications that do just that!
read the article
Keywords: Google Latitude, Mobile 2.0, Web 2.0, social web, Latitude