I've been a member since 2005, Plus member since it started. As it's my only marketing channel I'm quite positive about it. I attended a ProZ.com conference in Eiffel Tower in 2010 and met Henry and other ProZ.com people there. I'll use ProZ.com services for as long as I translate. For me, the most useful function is the Blue Board. All of my clients have come via ProZ.com, both agencies and direct clients, even if not directly via ProZ.com but as recommended by my clients.