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