I was using this plugin forever it seems until this latest "upgrade". Putting some of the features into a second plugin "Social" killed my uses. My needs were posting a tweet automatically each time a new story was added to the site.
Now I have switched to another plugin that does the job, but not quite as well as the original twitter tools, I can't customize the hashtag, but that's a small loss compared to loading my backend with yet another plugin that has no value for me.
Wish I could get the prior version back w/o the nag of "Update"