Why Did Google Buy Jaiku?

Jaiku makes good sense in the mobile world where written (thumbed) communication needs to be short. It can offer Google a good user-base from which they can launch other mobices (1). Great for embedding ads, and for the multi-lingual user-base

(1) MOBIle serviCES.. If I'm the first to coin this term, CC Attribution please :P

it seems pretty straightforward to me. my only hope is that they pay a bit of attention to the physical design of the phone, and think outside the '40 buttons and a small screen' box.