Does the devcoin-app have to stay open 24/7 or can it be shut down most of the time and opened just to check or use it, or let it run at a certain time each day for an hour or 2.
Alot of times when I check it's using 100k, 175k, or even up to 250k cpu just running in the background, other times it's only using 5k, 15k, 25k cpu.
When it's open, you assist the network. But, yes, you can shut it down and open it back up any time. The problem with that is that you will have to wait for the blockchain to catch up every time if you close it.