I've got all of these posted in my Q & A at the top of the forum, but I am adding them here as well. I hope this helps answer some of your questions about posers!
1) A poser wouldn't come online to talk to fans, would they?
Mmmm yes and and no. Some celebrities do have private pages and they do interact with fans. It's not an impossibility. I mean, look at Nick. He used to talk to people on his personal MySpace ALL the time. That's how he met Julie. It does happen, but the thing that people seem to forget is that there's always proof needed. Most people, like Nick, when they're ready to say who they really are, they'll use a web cam and shock the hell out of the person they're talking to. LOL! Then there's some posers, like Surf, who go above and beyond the average poser's game. Surf was going to the extremes of giving out Nick's real cell number, recording old voice messages of Nick's and applying them to a land line, and so on. However, Surf had been doing this so long, they got cocky. When they got cocky, their game got sloppy...that's why they got caught.
2) Why would a celebrity bother coming into a chatroom or forum?
Most of them don't and if they are, they're doing it anonymously. Surf knows that about celebrities and tried to play that game. Like I said, they got cocky. The more they saw people following them...the more they pushed the limit. They pushed it too far because no their little army of minions is down to like six people. LOL!
Most celebrities aren't going to post anywhere except where they can publicly announce their identity. They do to this for the sake of the reputation and for the sake of malicious people. I tell people on my site all the time, don't ever believe what you see at first glace. Look at the signs around the person. If anything raises a red flag, trust your instincts...they're usually right. Any celebrity would understand someone not believing them if they were to say "Hi, I'm so and so." It's a given in the internet world. This is why the population of celebs who roam on the net freely saying who they are is about 2% of the Hollywood world.