Truthfully this has been a real grey area with Disney, at one time telling you can give the site out, then next day saying no.. Basically I would make a free account and go to the extra effort of logging that on to give out a guild forum.

Many times its someone in the guild that can make this a big mess, repot long used names, report web sites, and such things that got mad over something.

The primary issue for them is likely they cannot control the content of any site being passed along by the members. Being that they do not want inappropriate content to be linked to them in any fashion, they are leary about it. They may for example somewhat look the other way seeing a known site such as POF, and knowing the management and how content is reviewed constantly and monitored to be kept family safe. I actually never give POF's url out to anyone i just say search for Pirates Online Forums, it always works. As for guild site, well, might be a good idea to channel your guild through POF for example, helps to communicate better without being banned. However keep in mind we have similarly strict rules about Personal Information as well.