I have definately been more active on the forums lately. Is there a limit on how many posts per day you can do? because once I am done doing my forum stuff for the day it seems like the entire list is all of my comments =P
Sometimes that's just the way it goes. I've seen forums that are a long column of "Wodong77" as the last one. But everyone is in different time zones and everyone has different availability when they have time free, and for some like myself, not all of that time is going to be spent on the forum when I can actually be playing Minecraft or doing something on the Big List o' Chores. I think the main things are having something to actually say, and not doing double posts (and we can edit our posts anyway). The current system means we need to use our judgement and not go out of our way to abuse the DCD for forum activity dynamic. The fact that it even exists is huge, and I'd hate for us to lose it because of trying to farm DCD.
That aside, I think of stores as mostly adding a little flavor to the server-world and sometimes they'll give you a little extra DCD to play with. Sometimes you'll hit on a big seller, or at at least a "next big thing" item for a while. The other thing, I've seen a fair few stores that are perpetually out of stock when I get there. Just having stock on hand will probably help immensely, even if the items aren't particularly in demand. It's like with a real world store; if I walk in and there are a bunch of empty shelves in the front, I just turn around and go to a different store. You might even have the exact thing I want, way in the back. But I'm not going to go look because I don't have much faith that it will be there when everything else is picked bare.