I think the shared experience is a truly great idea, however there are a few I've noticed who seem to be abusing it. If you're joined to one person, not making any attempt to attack the critter and instead are standing there in hiding or keeping disengaged why should you receive any experience for someone else doing all the work when they receive no experience at all? This is only my opinion but it's like some are leaching off from others to advance which is as bad as cheating in my eyes (and a few others that have noticed it too). I remember the Clerics guild getting hit for abuse of experience and can't help but feel this is pretty much the same thing only on a larger scale. Mind you this is coming from a Wizard, and Wizards and Mages can't really do much damage unless slingin spells at critters.
Genevier