I get that the friends list is a good way to create a social network of people, but here's my question: why should I approve someone's friend request?

I would like to recommend adding a text box so the person can send a reason for asking to be your friend.
If I get a request from "JoeNewbie" and I have no idea who he is, why should I add him to my friends list? Sure, I could click on his home page, but that usually doesn't tell me much. I'd be much more likely to hit the accept button if the person told me why I should add him as a friend, even a simple "I like your artwork".

The site runs the risk of having some members almost "spamming" other people by clicking every "add as friend" button they can find, just to build their own friends list.
And what was the motive for "Store Staff" wanting me to be his/ her friend anyway? ;)

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