Textmarks.com

This site is brilliant. You choose your keyword such as 3amjosh. If its available you then control it. Someone can send a text that says 3amjosh to 41411 and it will send them back a text with whatever message I choose. Advertising and getting alerts out is quite easy and quick with this. They have some other unique tools that you can use to send out group messages to your subscribers and you can update your response from your cellphone if something were to change. Pretty brilliant especially paired with a nice shirt from Reactee.com