Attention, bottom-feeding Gothamites! Weblogs Inc. cofounder Jason Calacanis is eager to bore you to tears over dinner about how great his new venture Mahalo is. (The short version: Remember Yahoo's Web directory from 12 years ago? That's basically Mahalo.) The buntrepreneur is stuffing his bulldog-cute, apple-cheeked face full of dim sum — oops, back to fatblogging! — at the Golden Unicorn at 7:30 p.m. tonight, notes Silicon Alley Insider.