Politico reports that Jessica Alba and Cash Warren will host Super-O-Rama, a bash for the final night of the Democratic National Convention in Charlotte. The event is being put on by three of the bigger Democratic SuperPACs: Priorities USA, Majority PAC and House Majority PAC. Pitbull and Scissor Sisters will provide entertainment.

Facebook is planning a big presence at both conventions, including events called “Apps and Drinks” from policy and product teams to mix with journalists, briefings hosted by National Journal and The Atlantic, and “Innovation Nation” receptions “honoring pro-technology legislators and highlighting the contributions of leading high-tech innovators to the strength of the American economy.” With CNN they will be launching an “I’m voting” app, and Tampa delegates will be able to swipe a special badge at Facebook photo spots and upload commemorative photos to their timelines. More here.

MSNBC announced that Chris Matthews and Rachel Maddow will anchor their primetime coverage of the conventions, with coverage starting on “Way Too Early” and “Morning Joe” and continuing throughout the day. The network is producing profiles of each candidate — A special on Mitt Romney airs Aug. 24 and a special on President Obama will be shown on Sept. 3. They network also is planning what it calls “interactive fan experiences” in both cities: a “Morning Joe” viewing party at the Boat House Bar at Channelside, with “personalized button making, interactive photo booths, a latte artist and free coffee.” In Charlotte, viewing parties will take place at Enso restaurant in the EpiCentre courtyard, including meet and greets and button making, photo booths show giveaways and free wifi.