Want to know when to get on Twitter to chat with fellow users about such topics as community building, optimizing your conversion rates, fundraising or new developments in mobile tech and social media? Check out Twitter Chat Schedule, the Google-doc-powered TV Guide of Twitter talk. It's got more than 450 hashtags listed for more topics than I knew existed under the sun, including many of sure interest to folks in the poli-tech world. See for example: #commbuild, a monthly chat that happens on the third Thursday of every month, from 4-5pm EST, moderated by Amy Sample Ward, NTEN's membership director (she also integrates CoverItLive into the chats and keeps archives!); #CROchat, a weekly chat Thursdays from 1-2pm about conversion rate optimization; #fem2, a weekly...