The RuneScape Wiki is famously the only fan site that anybody ever uses any more. This is because within five minutes of a new boss being released, the dedicated Runescape Wiki Gnomes can tell you exactly what it drops, its weaknesses, and its childrens' birthday(s).
Despite being far more up-to-date and comprehensive than any other site (though Zybez is somewhat better for clues), it remains a "silver" level fansite. This is less to do with any inaccuracies in the website, and more to do with the fact that being a large independent site, it can absolutely ream Jagex every time they mess up. A brief look at the "Controversies" section in the quest guide for some of the lower quality quests that Jagex has produced recently will tell you everything you need to know about this phenomenon.