It is system neutral (or system agnostic as they like to call it) which means it's not tied to any particular system. We just happen to use it for Pathfinder. It can even have a hex grid instead of the normal squares if you're playing something like GURPS or one of those mecha games.

Here's a video of how it looks like (you can see that dynamic lighting thing I mentioned around 0:30), but keep in mind that that's just scratching the surface. You can make it as simple or as complicated as you like... from just using it as a digital map (like my group does) to wholly transporting your entire game onto it (with character sheets, dice rolls, HP bars etc.)

That sounds interesting... Does it have a social network component? Can you find a crew to play with via program?

I honestly don’t know. Never tried using it that way.
I think there is a rudimentary community on there (in the sense that you can search for other registered users and their campaigns) but don’t take my word for it.

Is there some good way to find people interested in making a crew, online? And that it is not a Facebook group, I hate them So many weird people and idiots out there on Facebook...

Hmmm... not sure.
I've never played with random people online, it was always local friends, so I don't really know where to start looking. Sorry

I know what you mean about Facebook though, that's the very reason I resisted making an account for so long before succumbing to peer pressure

I'm the same as Ghaz, always played with friends at home, so I can't tell you for sure, but depending on what system you would play you should check out the forums on the official site of whatever game you choose. Paizo's (makers of Pathfinder) forum, for example, is very active and I'm sure they have a topic or two that deals with people looking for a group.

@Rathamon That is a great idea!
And you and Gaz should start finding people online or something. Selene and Scarlett played only with a local crew, and look what happened to them

Maybe we should start our own online crew What would you like to play?

Agreed!
I would like to play some Warhammer 40K All this talk made me wanna kill some heretics

Can we make a forum topic and play like that?
I think that could be fun, with all the people not knowing what is happening