Interesting points raised in this thread. I have not had any problems with GR yet in the last 4 to 5 years and have had a lot of contacts in the first week (3 cousins etc) keep finding more matches and since not all of my tree is on GR (I have 13,000) then I am still doing well with the contacts. Not found many yet on RC but still hoping to find some more. Did PM somebody a few times on RC with a definite link but no reply yet! I also use world connect and gencircles to see if any matches. Generally google and other specific search engines that search genealogy sites. Basically I use a blitz everything approach and find I do get contacts.
John