July and August (and Novemeber) have been historically some of our slowest months period. We only have the forum stats for the last year available on this site, but if you would go back and look at the old forum stats you'd see that it has been pretty consistent. The fact that we are averaging around 1500 posts a month (roughly 50 a day) for this calendar year is a good sign because it means the forums are starting to pick up.
