Recently, Twitter made some changes and dropped support for RSS (as well as imposing plenty of other measures and limitations along the way). You can read about it here –

A while back, I shared some code on How to get a Twitter feed into your WordPress theme. These new changes to Twitter’s API mean that this method no longer works. So, I’ve updated it.

I’ve also moved it into a Class. This needs updating already, as the JSON API actually gives us access to all sorts of new things, but this should be a good starting point.

Image Credit: Ian Sane