It does look quite cool - although I've not been able to actually play test it yet - so don't know how challenging it would be to actually run a campaign with users - but the editor looks interesting, can use larger prepared maps or get down to very detailed granular map building, and adding creatures looks straighforward - not sure about encounters like traps etc yet - just need to either pick up pre created campaigns others have already implemented for this site, or expend a lot of effort creating your scenarios in prep for the playing - might be good for occasional use of precreated campaigns online for when we can't play together, but for more detailed scenarios you build yourself, the time taken to create them might not be worth the time you'll spending playing them...