Drupal 7.x

Is it possible for people to subscribe or receive notifications based on forum tag words? Ex: If there was a tag for "Gap" clothing, so people could receive notifications on every thread that was tagged "Gap".

What about regular subscriptions to important threads with email notifications?

Hi Friends,
Can anyone of you give me an idea of multi-site installation on Drupal7 with multi-language?

Is there anyway to disallow people from using fonts of their choice? Right now I am using a text editor, and although they can't choose their fonts, when a user copies and pastes from another website, the font is carried over. I would like to make sure all of the fonts are consistent on my site. Anyway to do this?

I recently installed drupal 7 rc2.
Everything works fine except my Clean URL's. I followed the guide as described on drupal.org but when I do the Clean URL test nothing happens and there are no options to turn them on or off.. Can anybody please help me?

I can't seem to make it mandatory to have a text editor in D7. The best I can do is to make the default plain text not enabled and the text editor selected as a default. But then the user still has the option to select plain text or the text editor of my choice. If I don't let the user choose, then I can't get a text editor to work at all. Is there anyway to make it mandatory and not optional to have a text editor in drupal 7?

I'm trying to load the user registration form into the front page (for some cool jQuery stuff) in a Drupal 7 installation. In Drupal 6, the code was as simple as this....