Yeah I think there are a few factors as to why it's been a bit quieter, but I don't think the "split" thread was one of them. No-one has deleted their profile or left the site over that.
It's back to work for most of us, and the free month is now over so a few members who were trying out SW:TOR have decided not to sub. We expected that though and we are grateful so many people decided to try it out with us in the first place.
Plenty of people spent an awful lot of time in-game because it was new, so they are probably taking a bit of a break as they are all Star Wars'd out for now, but they will be back. Also the buggy chat channels are a problem that I hope Bioware fix soon. I still have to rejoin the KoS and LoS channels at times, even though it remembers my settings, they're not visable when I log in occasionally and I miss some comments.
We noticed a lull in activity in Stonewall Fleet around the same time after launch, and I can assure everyone that things always pick up again. Part of the problem may also be that if you see nobody else already talking, you don't want to start a conversation, and until someone does, it stays quiet. That never lasts long though and at any time it can get very busy and active again.
I mentioned in the "State of the Guild" post that we may need to disable the in-build guild channels if we see people socialising outside the private KoS/LoS member channels, as we want everyone to be able to socalise together. I've not seen a problem with this yet, but if anyone else thinks it's becoming a problem, send me a message and I can open a debate thread on what we should do.