Another cool firefox extension that Google has released is Google Send to Phone. It enables you to send snippet of web page content to your mobile phone using SMS. For example, it maybe useful when you need to directions to your friends and relatives. It is quite useful, unfortunately it only works for US numbers at the moment:
Google Send to Phone for Firefox is an extension that enables you to send short text messages of web page content to your mobile phone. For example, you might text message yourself a phone number, an address, or directions that you find on the Web.