Yes; there basically is a limit how strong you can be in Runescape , melee wise is level 99 Attack and level 99 Strength.
Magic and range is the same , max levels are 99.
The maximum combat level in P2P [ Members ] is level 138.
The maximum combat level in F2P is level 126.
There is no longer such a thing as a trade limit.
No.
You must be at least 15 years age to be able to talk on runescape.
the trading limit has been lifted.
There is none, since Runescape is java based, and run from servers. People have attempted to 'macro' for their own gain on runescape, but the creators have put large measures in place to limit this.
strong hold of sercurity
Yes.
Non-Members: 2 Members: 6
No, you cannot because JaGeX, the creators of RuneScape, made it like that because of macroers who cheated and made the game worse.
in runescape you can find swamp toads in the swamp northwest of the grand tree (Tree Gnome Strong Hold).
Yes, especially if you wield Ancients.
No. An unlimited trade limit is now impossible on runescape, even if you do all the quests its still not unlimited. Sorry but that's just how it is now. XweaselX