Virtue has the most RP, but most servers have *some*, it's a question of how frequent.
For your best odds, get on Virtue.
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Virtue is the unofficial RP server but it and pinnacle are the 2 that sound like they have the most RPing and it sounds like freedom has the least
Martian spy-lvl28-champion-energy/energy-tech/blaster
Stone Singer-lvl12-virtue-earth/sonic-magic/troller-RP
Jack Grimm-lvl17-virtue-zombie/dark-magic/MM-RP
Barbed Trap-lvl 6-virtue-spine/regen mut/Scrap-rp
((your like the park mascot and the tutorial to RP))-starlit savior about stone singer
I started on Pinnacle, mostly because some of my EQ buddies were there. There are some RPers there, and definitley some great people that play there. But I created a toon on Virtue just to see if it truly had a higher RP population. So far, I have to say, I've run in to MANY more RPers on Virtue. Something else I've noticed, is that is seems that people on Virtue tend to stick to one character, and not play so many alts. I say this because I run in to the same players a LOT on Virtue, people I haven't even set up as global friends, just toons that are progressing at the same relative speed as me, and frequenting the same zones. Either way, although I like Pinnacle, and the people there, because I really enjoy the RP aspect of the game, I have become more and more of a Virtue player.
-KC-
Virtue for the win. 
I've never had any trouble finding RP on Triumph ("the friendly server"). My toons are mostly in RP-oriented SG's, but even in pick-up groups, I've found good roleplaying. I've been able to "infect" groups that started out with minimal RP focues, as well.
Not a whole lot of the "EQ refugee elves sitting around in the park angsting out for hours on end" sort of RP, though...
*whistles innocently*
"And in this moment, I will not run.
It is my place to stand.
We few shall carry hope
Within our bloodied hands."
I have a question. I wanted to get back into rp, but I don't know which server that would be best on. I remember the last time I played earlier this year, there was mention of an unofficial rp server. Which one is it? I think it was Virtue, but I would like to confirm that with other RP'ers.
Any help would be wonderful. Thank you!