a way to add tags to users?

[thatbluedude]

I'm looking for a way to add tags to member accounts.
Can someone recommend some greasemonkey scripts or whatever that could do this or be repurposed with moderate hassle?
I don't need many different tags or a lot of tags per user and adding new tags in source is ok, but it would be cool if assigning a new tag to a user would need 2-3 clicks max.