Mountain View-based instant messaging service Meebo has hired Montgomery & Co. to raise another $25 million to $30 million, only a year after its last round. Reportedly, Meebo founder Seth Sternberg hopes investors will buy in at $250 million, up from $90 million last year. That's $10 million more than what JPMorgan wants to pay for Bear Stearns. Seth, I've embedded a Meebo IM window below, so that you can ping me and explain what you're drinking. I'd like some, too.