Is it possible for each user to add their user account for the tweet this option? I have several blog publishers on my site but it seems you can only quote 1 user.....Thanks for any help!

Here is a work-around:

I have p8 Twitter which allows you to have multiple Twitter streams. Each stream has many configurable elements and you can save with a specific name.

Publish a module for each user and select the stream that you have saved with their configuration.

I have a small site, and it works fior me. The problem arises if you use the K2 tools "menu" rather than the traditional Joomla menu. I can't figure out how to assign a module to a non-Joomla menu item.

I hope this helps. The long-term addition of a twitter account per user is a good idea.