WordPress To Twitter Plugin?

Hi guys,

This might seem like asking for a lot, but I’m just curious. Is there a plugin that more or less qualifies this way:

1. Posts from blog to twitter.

2. Shortens link to blog post as custom domain. So instead of, say, bit.ly like http://bit.ly/newpost, I hope the plugin will post a blog link as http://domain.com/abcde.

3. Hopefully not so CPU resource intensive.

4. If possible, it connects via twitter username and password only. I think I’m amenable if it includes other options, but I’m also hoping just user and pass will do.

I’ve gone through the list of plugins, but I’m not able to find one indicating especially #3.

David