To take a false identity through a blogging communtiy, and using aquired pictures and a fabricated bio. you talk to other roleplayers, remaining in character. May be an entirely original bio, or roleplay a character from a book or movie.

(v.) To act and speak as if you are the character you're portraying. To roleplay is as much about what not to say as what TO say. It means to keep your speech in the context of the setting in which your character (or avatar) exists. Context can be defined as both time and place.

Most roleplaying that occurs is in an online setting, such as an online game, a chat room, or a message board.

(adj.) A setting in which the act of roleplaying is strongly encouraged, or even enforced.

1: A game genre, most often associated with titles like 'Final Fantasy' or 'Diablo'. This also includes heavy titles such as 'Baldur's Gate' Series and Zelda. Most of these put you in the eyes and boots of some other character, generally prefabricated. Most of these have a main quest to complete, but also have a certain amount of open endedness. Despite popular belief, Diablo and it's off spring Diablo 2 are barely Roleplaying games. The 'Truest' Roleplaying games allow you to play a role you make on your own, generally by a Character Generation, as seen in AD&D Games (generally) and in other games like Morrowind. Basically, any game that puts you in the shoes of another character, gives you a world to explore, and causes the players to make 'life' changing decisions.

2: Done on message boards, people make their own character and play them (more or less) in a set of rules laid down by forum moderators (once again, more or less). These usually see a lot of fighting, and are usually populated by people between the ages of 12-20. all actions and descriptions, abilities and powers, are at the mercy of the player playing the role, and are described in text.

1&2 Generally have time period in the fantasy medieval realm.

3: Where two people play different roles in a sexually suggestive manner. This is generally to provide ...

When you act out one of your sexual fantasies using characters ie. Dentist, teacher etc

To 'play' a 'role' in which you are not usually cast. This may range anywhere from the more common fantasy/science fiction as seen in RPGs and online, or may manifest itself in day dreaming, dreams, wishful thinking, etc.

A online game where people can make up new people and new lives. Basically, anything goes.

completely addicting games which take over your life, make you antisocial, and, in a worse case scenario, end up with a 30 year old playing the games whenever they have a free moment.
Eliminates possibility of getting any work done at all.
Commonly sexual, even if it's Harry Potter roleplaying.