You can check out this thread in the DMD forums, alot is explained on minting here:
http://bit.diamonds/community/index.php/topic,46.0.html
it is required to have the wallet open and in minting mode to claim ur rewards
but ur coin-age which is base of the amount of rewards increase even while wallet is closed
please ask such questions at DMD forum http://bit.diamonds/community/
i only rare check BTT and it can happen u get no answer here
I'm sorry, that minting thread actually says you only need to keep your wallet open for 1 day a month to get rewards. I kinda thought that was weird too, that's why I linked to the DMD forum where it said that. My bad for the misinformation.
http://bit.diamonds/community/index.php/topic,46.0.html
What's funny is that I was told to goto the BCT thread to ask questions because nobody kept the forum up to date... Guess that changed. Sorry.
Edit: And no, I didn't mean that you can leave your wallet closed for a month and open it one day to receive a stake from when it was closed. I just meant that from the information I was given, blocks would accrue weight just as they would if your wallet was open. Is this correct?