Very cool people. Some of the best people I know. Getting them to crack up in hilarity is one of the best things you can do, because it can be difficult. That being said, also the best conversation during the wee, wee hours of night. Day is not their abode. Can often seem like you aren't as close to them as they are to you, but made clear every once in a while that this is not the case. Have an amazing ability to point out my flaws without making me defensive about it (which generally doesn't happen).
It's a shame there aren't more of these guys and girls in the world.
I've made two good friends online and only after we became good friends found out they are INFP. (ok, actually they are the two people who got me interested in mbti) I haven't had any confirmation of any other made-in-rl friends that are INFP.
I'm curious what I would think of an INFP I didn't meet online. Would I even get to know one without the convenience of being online behind a computer?