who said it's slowing down? only problem at the moment is school and RL getting in the way. The reason activity's gradually dropping is that people are getting older, so their free-time isn't what it used to be. And considering you're frequently disappearing for week long stretches, It's no surprise you would think the site's dying. you're hardly here enough to judge

On a side note however, I noticed one or two people say they're getting bored in the RPGs. there are numerous ways to entertain yourself and keep things interesting in an RPG. two methods in particular come to mind. the first [and preferred if you have the initiative and commitment to do it] is to start your own plot. preferably one that isn't built on an event-to-event basis [I noticed this problem with Gira's Germania plot until TT and Dm jumped in to stir things up and make things interesting. planning things in such a way that it went (using that plot's example) Pope is killed --> new pope elected --> assassination plot revealed --> new pope is framed --> sent to prison to await execution. This keeps people away because 1) They don't get the overall theme of the plot, 2) They aren't sure how much further it's going to go before it runs out of steam and stops and 3) The plot seems to be on rails, with no possibility of being influenced by other members. hence, rather than drawing in participants to stir things up and make things interesting, you drive them AWAY].
Now don't get me wrong, I respect Gira for putting the effort to make a plot in the first place. However, he can learn from these mistakes and avoid them in the future, and maybe even correct the plot to make it more interesting. For example, say, someone breaks the framed pope out of prison. Say there's an eye witness who saw an exchange between two people earlier that month that seemed shady. say this whole assassination is part of something much bigger [I may go on to develop something along those lines myself to assist the plot. toss in another angle perhaps]. the former pope and victim of the conspiracy could then decide to head along with a friend [say, in this case, that one trader girl who's supposedly close to her and has a background in life outside the cities] to track where these guys were last seen heading. try and pick up a trail.
This brings me to option number two: Joining an already running plot. Using my example with FRPG, A member whose observant here can pick up on the plot, and maybe want to toss in an idea or two, or maybe an entirely new angle, for the sake of amusement. They can toss in their own elements, their own motives. say for example, they have a character whose been searching for leads for ages and runs into the girls. they hear their story and then tell them that this conspiracy isn't the first of it's kind and their own home town faced something similar and they believe it may be connected. see what I mean? here you get a flowing plot that's interesting and ever-changing. So what the main participants of this plot had originally planned may not end up being the way the plot actually plays out. Other members get involved, other angles come up and suddenly the plot goes in a completely new direction that nobody expected.
I can give you another example of this: DIRPG. Near the beginning, the group split in half. the majority stuck with Barnes and Dodgson, while Jacob and David went rogue, initially out of the belief that the larger concentration of people and the potential mistakes they could make would get them killed. later on however, as Dm revealed Jenkins and the odd things about the facility [example being the ballistic destruction and lack of bodies], he opened up new venues for the plot. Simply following Barnes and Dodgson without doing some of your own development or investigation into the surroundings would leave you with a very boring rail-plot where you basically just tag along from beginning to end, with barely more than a random boring conversation between you to keep you interested until the next planned event. While the main group's basically having a tour, Jacob and David [controlled by myself and by CS, respectively] begin piecing together what happened to try and figure out what was really going on. They noted the lack of bodies, the ballistic damage, the lack of massive amounts of dry blood-pools from bodies, the fact Jenkins was the only survivor, the fact he had mild control over at least one of the animals, the fact all the computers had been purged or smashed. it looks like a cover-up. Next thing you know, there's this conspiracy theory going where Jacob and David believe that Jenkins is using the group to escort him to a meeting place, after which they'll be killed off by his original contacts, he gets away, sells his information to them [or their employers] for a few million dollars and escapes government detection. So now Jacob and David are racing after them to try and get to them before the trap is sprung.
This is a shining example of how improvisation can improve your experience in an RPG. it becomes more fun, and more desirable as a place to go to when you're bored, instead of being something you avoid BECAUSE you're bored.