I am on a number of different forums for my various interests, and I also have my own private website of a group of friends (30 or so) who I stay in touch with via the site.
I've noticed that over the summer months things slow way down on all the forums I'm on....except for the gardening forum lol! That one speeds WAY up because this is the gardening season so there's lots of activity there. But other than that, all the other forums get less active, I think because folks are just out and about doing stuff while the weather is nice.
I mean, lets face it, there's so much more to do in the summer months than there are in the winter months. I guess all I'm saying is the slowdown isn't just exclusive to this forum...I'm seeing it in many others too.