I have problems using any widget from Twitter on wordpress.com – by using text/html widget.
The twitter widget included in wordpress.com is not the best. Especially if you have both – facebook and twitter widget, they look very different (Facebook is an actual graphical widget while Twitter looks more or less the same to RSS text, no graphics, no icons/avatars from twitter, etc.). Therefore, I’d really like to use widget created on Twitter on my homepage. But when I paste the html code to a text widget, the system automatically deletes some code and shows only text.