The way I don't have that happen is to try not to get connected deeply. Joking around is Ok, but just don't go to any site that you are unsure about if your friend recommended it to you, or lend money. Just give advice on making money. I don't know, I think I have a tendancy not to trust people. :|
What is the most XP you have gotten in one Combat Stat? (Combat Stats being: Range, Magic, Attack, Strength, Defense, Prayer, or Hitpoints.) Mine was today, when I got my pure from 38 to 47 Ranged, and about 45K XP.