Social network Itsmy.com has dumped Google as a search provider in favour of Taptu.
Taptu focuses on getting mobile search right; sites that do well in its index are those sites which have been optimised to work well on mobile phones and devices.
I imagine this is a bit of a (small) blow to Google as the mobile search wars heat up and any loss here has PR issues related.
Here's a chunk from their press release;
In addition to core search functionality, Taptu can now offer mobile partners, like itsmy.com, mobile search sponsored links. This provides partners with a new incremental revenue stream, and gives advertisers access to high-value and young audiences in a relevant and efficient way. With worldwide mobile advertising projected to surpass $2.7 billion in 2008*, the opportunity is clear.