I would like to add to this post – I had a similar question and didn’t want to make a new thread.
I would like Twitter Tools to add my post tags (project 365, photography, etc) to the tweet with a # in front of each. I prefer to tweet my blog posts with the hashtags to catch particular groups and searches.
Even just the ability to edit my tweet before it posts would be great. For example, when I click on “tweet this” on my own posts, it opens a browser window with my twitter account and the status is pre-filled with “I just read this [url]”. If Twitter tools would do that, then I could just add my hashtags and send the tweet on its way.
For now, I have the post tweets turned off and do the above.