Can twitter api notify my app if some @username gets mentioned?

Can twitter api notify my app if for example some @username gets mentioned (push like), instead of checking 开发者_开发技巧every minute if a username/usernames are mentioned?

Why don't you use the Twitter Streaming APIs

The Twitter Streaming API allows high-throughput near-realtime access to various subsets of public and protected Twitter data.

This is not yet supported by the API. There are 3rd-party APIs that can do this though. I used Imified before to do just this, they support Twitter mentions as well as IM networks like GTalk.