How do you...

...Flickr?

I've recently started using Flickr more. I have a question for those of you who use it and read this blog (hello? anybody? anyone at all?).

If some random person adds you as a "contact" because they like your work, do you then automatically add them as one of your contacts? Or do you reserve your "contacts" list for people you know or who's work you enjoy? I guess the more contacts you have, the more exposure your work gets (in theory). But what's the use of having hundred of contacts if you are looking for a particular photo by a particular person?