I have to agree with DavidDTW - all of FT is one large travel group open to all qualified members and arranged so as to attract many different travel sub-interests.
For meetups, the CommunityBuzz forum hosts many for members, around the globe. Some are intimate -- only a few members -- others attract scores of members.
For airlines, hotels, rental cars and credit cards, the forums under the Miles and Points category focus on the interests of frequent users of those travel providers, and the many under the Travel heading focus on particular destinations as well as special-interest travel.
Many personal friendships have arisen because of member participation in a variety of forums and FT activities.