Mmm, well, since it's been almost a year and a half since I started really getting around on the forums, but people do come and go on occasions.
School in particular is a big cause of this, sometimes sickness, but there can be any number of other factors.
Right now is sort of a "quiet period" if you wanted to consider that, but I have a feeling that others will step up in time, as they always do. Old reliable members do have a tendency to return every now and then, as well.
This isn't unusual, though, so it's nothing to fret over too muchies. <3