Linkshells that have been around for quite a while tend to do that, sadly. You lose the instigators, or members who get to higher levels are busier with things that don't leave much time for chat (of course even fishing makes it hard to chat now. >< )
I'm in Utopia -- a great linkshell with some really good, helpful, funny, intelligent people. It's a reasonably mature (profanity and l33t frowned on) linkshell with a good range of levels. But we're too dang quiet these days!
If you like a chatty linkshell and have a tendency to START things, see if you can catch me in game (which can be hard at times because I probably have the least time on in Utopia.) We can talk about it and see if you might like to give it a try for a while. A linkshell is not a life commitment after all. But a few good sparks and we'll have a chatty, energetic Utopia again. The fuel is there, we just need to get the fire started again. Perhaps we can help each other out. ^^