I attribute a large part of it to the quality of the members. Unlike many of the other internet photography and modeling sites there are no little boys and girls here.
Everyone I have ever encountered on Garage Glamour seems to be professionals who are very serious about their craft. They come to Garage Glamour with a purpose in mind and not to argue, or get as many friends as possible, or put up cell phone camera pictures.
Garage Glamour may not be the most popular or the most widely known site on the internet but it is the best. Long live Garage Glamour!! Nuff said!