In the Developer Preview of Windows 8, the Twitter client was Twitterama. In the Consumer Preview that went away. Metrotwit was a likely choice, but it seems they have had problems on Windows 8. So for a while it has been a Twitter-desert.
Just announced is FlipToast, and the internet is awash with reviews, such as this one.
I installed it, and had a look .. here are some screenshots:
The interface to me, isn’t that great – nor is it very customisable:
A cool thing though is the ‘share’ option is visible. So for example when looking at photos, you can see that I can share the photo via FlipToast:
And you can search tweets:
And a ‘live tile’: