SMS that is actually useful!

Organisations looking for ways to make messaging technology useful have finally come up with an idea that I actually think is helpful. Text message polling uses phone technology to gather opinion live from groups. This is a great idea and one that I really look forward to using at events. There are a number of companies offering this technology:

SMSPOLL
MORI review of SMS polling
Card BoardFish

What ever next? Something that makes Twitter useful?