EIFP here--with 100% on the E part. What can I say? I love being around people.
I've seen a similar thing done on nights out - a green sticker means I'm actively looking for someone to hook up with, yellow means I might be interested in hooking up, and red means definitely not under any circumstances. Saves a lot of time and effort apparently, but I don't think it's common.
Shame. I think more people should be able to express "don't even think about it sunshine" without having to actively reject people. ;)
MBTI is interesting, but has its issues/flaws. In general, it's decently useful for understanding how we interact with people. I've found it convenient in communicating with co-workers / bosses to help them understand me a little better, but not that much.
I'm generally a pretty solid INTJ, but I'll drift into F a lot and P on occasion.
As arenson9 mentioned, though, I've gotten a lot more mileage out of Strengths...
I actually don't like the MBTI for several reasons. Because it's not empirically derived and has no validity scale, there are a whole host of biases that can affect the responses. The types themselves tend to be so broad that a well-rounded person can identify with most of them at any particular time. The Kiersey scale (from Please Understand Me) is actually different and a bit better because it's based more on temperament and behavior, but it still suffers many of the same issues. The short test on the webpage lynkfox linked doesn't appear to be either of those tests, but is clearly inspired by both.
That said, they are very interesting tests, but I don't feel them to be particularly useful. If they completely reworked the tests to be scored more like the MMPI, I think they would be substantially more accurate and useful.
Kiersy is a little too broad at times
His personalty tempermant types are overly broad in their terms, but he tries to fit people into them And when you get down to their role variants, they are pretty much eactly the same as the 16 personalty types of MBTI - some slight differences, but you can fit his 16 role variants into the 16 types of MBTI (in fact, most people use the I/E, N/S, F/T, J/P system for describing the Role vairants and the Tempermants as well)
I do identify more with the Idealist (NF) broad temperarment at times, but an INFJ fits me so to a T that its not even funny.
And like all sucht hings, people resist being put into categories. Everyone has a little bit of something else in them, these are simply dominant traits.
But its fun to talk about,and fun to work around.
Again, though, I am continually amazed by the number of N types here.
Really? Why is that? 
I'm an ISTP, woo!
INFP - I'm pretty solidly in I and P, but right on the fence with N and F. It probably depends on the alignment of the stars or how many unlucky tokens I have collected today.
Hmm…
Unfortunately, I can't tell if you're kidding or if you're serious.
Serioues about the ISTP being what I got. slightly kidding about the "woo!", as I wasn't actually that excited to see I got it. Though it does match up quite nicely from what I skimmed. Though the personal space part is way off, i'm not so big on touching or being touched.
I don't do personality tests, I don't want to be in a box.
Which probably tells those in the know more about my personality than I give a damn to know
ONE OF US
ONE OF US
ONE OF US
It says I am an ISFJ. Seems a bit accurate.
*edited for poor memory
When I took a similar test in Psych of Personality I got ENFJ. This test gave me ENFP. Extraversion - 62%, Intuition - 20%, Feeling - 27%, Prospecting - 29%.
ESFJ
So I'm Sociable, Altruistic and Practical. So i'm a SAP. Also, it says I'm a team plaer. Now if only their was a game I could play where working together, being sociable and helping other out there that I could play. Also, I like superheroes.
Any suggestions? :P
Kill Dr.Lucky?
Well I stand corrected; apparently I do have that kind of time now, and I came out INFP.
Strength of individual traits: Introversion - 55%, Intuition - 43%, Feeling - 12%, Prospecting - 34%.
("Prospecting?" I've heard it as "Perceiving" previously.)
same here. Isn't prospecting what you call digging for gold?
Nope, we're all cranky gold miners now.
Speak for yourself. I'm a J. None of your stinky mining for me!
(To be fair, I'm pretty much neutral on that last axis.)