For all those who say they believe that RuneScape has been trying to RuneScape gold make itself WoWable: Stop being so sure, you're not. Let me explain the reason RuneScape as its game is not able copy mainstream MMOs due to the way in which the core of the game works.
In many MMOs, you can increase your character's level and then "skills" generally refer to professions and such they allow you to make the ability to alter, enhance and improve certain items, or even yourself. In RuneScape the entire game is tied to abilities. You craft your gear and you improve your skills. you improve your combat skills and are unable to perform things that are important without learning skills. This is a fact. You can't even begin to hunt with no knowledge.
I'm not saying it's a bad thing but it can leave RuneScape somewhat weakened. Getting 99 in a ability in RuneScape is usually as fast as gaining max characters in another MMO at least for the major part (unless we're dealing in useless abilities like Cooking, Fletching, Firemaking or the like, which could be accomplished in between 60 and 70 hours). At least, not much more.
In terms of boosters and other special effects that's what's at the heart of prayer. It's purpose is to give players the advantages and rewards in combat that other MMOs typically offer the player through tradeskills, for example, crafting runes of armor to attach to osrs fire cape service your armor, or making your weapon increase its power, and what not.