i just recommended the sift to a friend, as i often do, and it gave me an idea. what you guys need is another feature request that may have been previously discussed already! so here ya go:

it would be cool if i could send my friend a signup link with my username in it, so that if he joined up i would get some kind of referral credit. his profile could say "invited by MINK".
i would definitely spam all my friends if i thought i would get some kind of increment in some kind of metric somewhere in my profile.
"top 15 siftevangelists" would be a cool SQL query!
we could be like the mormons!

ohpleaseohpleaseohplease do this.