Improvements to user experience/intergace

Firstly, I think your module is excellent. There are very few good modules that aid users in entering tags! ("Suggested Terms" is the only other decent one I can think of).

I have the following suggestion to improve the use of this module, ordered by importance. The first 2 I think are very important.. the others are just petty niggles.

1) Do not allow the same tag to be selected by the user more than once. (like "Suggested Terms" does - maybe borrow the code?)
2) Leave the java selector box opened after the user selects a tag from it. At the moment, the selector box closes and the users must re-click on the normal text box in order to reopen the js selector to choose more tags. This can become annoying when you are selecting many tags.

3) Intent tags on following lines by one space so that they are all in-line with the first line.
4) Do not wrap whole tags to the next line. See "Hip Hop" and "Rhythm & Blues" in image example. (but maybe I am the only one who prefers it unwrapped?)

See the attached image for a visual example of points 1, 3 & 4.

What does everyone else think about these suggestions?

Regards,
Andrew