How to dump your Web 2.0 girlfriend, boyfriend or whateverfriendHow do you deal with a derailed relationship that's still on Facebook — and Twitter, and Tumblr, and FriendFeed, and a couple dozen blogs? Recently-outsourced Valleywag writer Melissa Gira Grant wrote a how-to for chick-culture site The Frisky after dealing with a breakup firsthand. It's aimed at young women, but applies to anyone. I'm happy to report Melissa's writing is tight enough that she needs no 100-word version.