I'm with RC_Cinci, not sure how closing a match quickly is "rude." I would think it would be more rude to go almost all the way to open communication or farther and then decide you don't want to continue. I'm not entirely sure if there's a non-rude way to close, as any of the responses can be taken the wrong way if someone is determined to do so.

My most common reasons for closing a match are a combination of weak profiles (ones that basically don't tell me anything), lack of or dislike of pictures, and distance. If someone lives in LA or Canada it's probably going to be hard for me to really form a relationship. If nothing in the profile catches my eye, plus the picture isn't attractive to me, why would I keep communicating? Not much point in forcing a relationship you aren't interested in. Be honest, women, you would do exactly the same thing. If you aren't interested in a guy, you won't date or pursue him. Why is it wrong when we do the same? My "double standard" meter is pinging =).

I had a girl close out on me right away with the distance thing. She lived in Arizona. My reaction was simply "Fair enough." and that was that. Instead of taking closes personally, why not just accept that you probably wouldn't have gotten along? If the reason for the close was shallow, than the person was probably shallow, so why would you care? If they actually thought about the reason (I usually do) and closed out, they probably didn't want to waste your time or theirs with a relationship that had no chemistry or one-sided chemistry. I'd rather have that then go on a first date and have a girl say I was nice but she didn't feel anything for me. Yay.

I basically put honesty in my about me:
"Quality, as in singular? Probably authenticity. I like people that are true, both to themselves and others. Not just in telling the truth, but in being yourself in any situation. I believe that people who can look at themselves, see both their flaws and their talents, and then laugh and accept both, are people that I want to be around. I want to look at my life, accept it, and become the person I want to be, and I expect the people I'm with to pursue their own lives with that passion."

There's a lot of good traits that go along with honesty, and it's one of my most important values. What's wrong with looking for that?