This is just freaky. I found your post just after I went through every issue of the sga_newsletter form July 23 through Agust 1 and counted how many links there were for fanfiction for each pairing. McKay /Sheppard was the most with 100 links, Sheppard/Weir was second with 21, Sheppard/Beckett was third with 6.

If anyone is interested I'm willing to make a post in my lj with more details. I'm already planning to go through the newletter's memories to count how many links there are for each pairing.