Jagex is a company, so, you cannot get Jagex on your DSI.
RuneScape private servers are illegal!! If you get caught using one, Jagex might procecute. It is against rules, and you can get in major trouble with Jagex Ltd.
Jagex's population is 450.
Jagex is located in Cambridge, England.
Jagex Ltd, is not a person it is a company. So, you can't have a friend named Jagex. You might have a friend that works for Jagex though.
Yes, JaGeX are the creators of RuneScape. Paul and Andrew Gower formed JaGeX.
No, Jagex is in England.
The FunOrb site (funorb.com) and the JaGeX site (jagex.com or jagex.net) are other sites made by JaGeX.
There may be 2 reasons for this:You may have added it to your friends list.This could be a Jagex Staff impersonator, and what I would suggest you do is wait for him/her to say something then report it straight away, then remove them from friends list, then add them to your ignore list so that way you will not have to bother about them.Note: They will threaten you lock or ban you etc. if they are trying to impersonate, but rest assured if it were anyone what works for Jagex they would have a gold Crown even in private chat, and if it were a mod they would have a white crown, so if they don't have any crowns next to their name, report then ignore list.
A Moderator has a Silver Crown next to his name, When you turn off Public or Private chat, He can still message you and see him in-game chat A Jagex Moderator has a Gold Crown next to there name, They have total power over everything on runescape
the jagex headquarters is in cambridge uk.
That is an answer we probably will not know until they [Jagex] announce it.