Today, Twitter made this announcement about Instant Notifications:
“We want to make sure you see important Tweets even when you’re not looking at Twitter at the moment. To help with that, today we’re launching push notifications for @mentions.”
Since this is essentially why we created Twext.me for Ben Martin, we will be evaluating what to do with Twext.me in the next 24 hours. For those of you with one Twitter account, we’d advise switching away from Twext.me immediately. The mentions notifications are sent almost instantaneously.
To set up your Twitter account to notify you via SMS when you get mentioned, go to your settings on Twitter, select Mobile and tell it how you want it to act. The illustration to the right shows you the setting for having all mentions from anyone sent to your phone.
Note: Twitter will only allow one account to be associated with a phone number. So if you have multiple Twitter accounts, you can only have mentions sent to a single phone number from one of those accounts.