Just to add to what's already been said. I joined in 2003 and the board has steadily been losing its luster since. It sounds silly but discovering this board is one of the most important things that has happened to me. Not only have I made friends through this site but owe most of my knowledge of motion design to it as well.
Much can be made of the A-list studios not updating as much as they used to. Splinter groups doing their own thing. Superstar designers/posters leaving the nest. Regulars becoming jaded/busy/disinterested. All of these factors are out of our control.
In some ways, Mograph has improved. IF you post your reel and you somehow awake one of the Mograph Sages (Sao, Tread, Binky, Crabster, Beav, Gov, Seabass, Frizzle, 3rd, etc) and IF they have good things to say then you've got a winner. They don't often respond to lukewarm. Only hot or cold. On the other hand, if you get 300 views and the only responses you get are from other newbies saying things like "Cool." and "Nice work." then go back to the drawing boards. Interesting work solicits responses with substance.
Also, it's only recently that we've been meeting each other in the "real world". You're not a real man until you've been taunted by Firebetty in person.