So ive gone through today and added about 50 profile fields to my website. Many of which are single or multi select boxes and therefore require me to put in the fixed values. A simple addition would make this extreamly more usable.

Make it so hitting the enter key adds a new value, if pressed while inside an input box.

Current Workflow for adding three values:

1) Click input box
2) Type in value
3) Click add value button
4) Click input box
5) Type in value
6) Click add value button
7) Click input box
8) Type in value

Suggested Workflow

1) Click input box
2) type in value
3) hit enter
4) type in value
5) hit enter
6) type in value

... because you're just straight typing you could cut down the input time easily by half.