The forums may not be used to make accusations about another player by name.
If you have been scammed in the game you should have sent in an abuse report allowing Jagex to have the evidence needed from their own systems to be able to take action against that person.
For advice on how to spot scams, please see the Support Centre article on
Scamming Prevention Guide
. The old saying, "If it seems too good to be true, it probably is" is good advice in dealing with others in RuneScape as well as the real world.