[Steve]

Getting a caller ID on your phone display is a neat thing if the caller is already in your address book. However, if the number is unknown, it isn't exactly very helpful. It would be cool if the phone could do a quick lookup in an online phonebook database and display the caller anyway. Maybe this would be possible via Bluetooth technology?

Reward: The product for free

[Tom Potter]

Google SMS beta allows mobile phone users to search Google via text messages. Just send your query to 46645 (GOOGL on most phones) and you'll get back results in another text message. Currently the service is US only.

With the combination of phone look up (or even reverse lookup), local results, Froogle, the built in calculator and more, this is a powerful service.