I like the idea, It will help a lot in updating guides and new guides could be implemented.
They should be reviewed to prevent things like these from happening, The guides are usually debated in the forums, to see if they are correct or to implement things.
The only problem I find in this is the number of guides (It could be repeated some) This would only be the case for the strategy guides, For example: Everyone have their way to play strategies, tricks, experience etc... Then there is no definitive guide for this. (We will have to see how we can make this work)
But for quest and raid guides, it would be very good, i give my +1 too :D