[daveverwer]

Main reason... I wanted to keep it really simple in terms of implementation and also so people might see the hashtag being used and go investigate what it was :) It was knocked up in a few hours total.

However, I also think it would be easier just add the hash tag to a tweet that you may even already be typing rather than have to go to a separate web page and enter a form. I would certainly prefer to do it this way.