I love witty people ....seriously, if you can think quickly, like improv quick, then you and I would will have a wonderful time talking about life's mysteries. Or at least about think like why grape Kool-aid doesn't take like grapes. I stay up late night, because that is when my energy levels peak, but still have to get up early. I love singing in the car and would encourage you to do the same. I am over the club scene but loving going dancing and to comedy shows.
So I have no "type" My focus is always in the face, and of course, we need to be attracted to each other. Doesn't mean anyone has to be be "perfect", just that each person like looking at the other. And again pictures on a site like these should give a good idea of what people look like, but it's the mannerisms and interpersonal dynamic meeting face to face that is the only way you can gauge a spark.
I don't do well with fake people...at all. I am who I say I am and don't need a facade to hide behind. I am the same guy on the first date that I am after we have been together for 5 years.
It's so hard to really project a personality on these sites. Words can only go so far. Plus I have learned that people can say whatever they want on here, but it doesn't make it true. So honesty is key, be yourself, so the right person will recognize you when they finally find you. That's what I'm doing at least!
One last thing is that I am in my second year in my PhD program. So my free time has been sliced down quite a bit. But I can always make time for a good person. :)
The first date should be something light and variable. I think a true spark can only be identified in person. That moment where we have that nervous first contact where it's awkward or completely natural. If the latter happens then the first date will be fine, and the second date will be incredible.