If you can't get enough of social networking -- and clearly we can't -- make sure and pencil in the 4th annual Social Networking Conference taking place July 10-11 in San Francisco. The San Francisco chapter will focus on my favorite topic, enterprise social networking and on mobile social networking. The keynote speaker will be Britt Selvitelle of Twitter , who's talk, cleverly entitled "What's Love Got To Do With It?" will touch on why it's not enough to make passionate users, but also "passionate creators" (a reference to Twitter's wildly popular API, no doubt). ...