Sadly, I am unable to provide you with any names of people who would be interested in doing roleplay through IRC. Also, I use the same name throughout forums, IRC, and other means of media. So it would be Slipomatic on the IRC, but I haven't touched it in a very long time. I don't know what to suggest to bring more people into trying it out. I really don't know anywhere else where your suggestion might have attracted some curious users. I would say try some of those free-to-play forum sections and post in the off topic section, but I wouldn't know how well it would be recieved. (That and the type of people lurking in those forums. *shudders*)