i don't see a problem as people are aware what they are donating and the totals are easily accessible it's not like he's hiding anything, so in theory he said £90 had been made which should cover another 2 months which is handy cause not everyone can donate all the time. Some people might just make one off £10 donations.
Are servers subject to minumum contracts periods?
Some are and some aren't.
I can see where DG is coming from, if donations were setup so that there was a limit, say £40 for the month. Once the limit was reached then the donations wouldn't begin again until the following month, etc.
Worst case scenario would be Matt receives £300 worth of donations, the server costs £40 a month.. That's seven and a half months worth of costs paid for, whats to stop him cancelling his contract and doing a runner after the 1st month?
I am NOT saying that this is the case but simply saying this would be the worst case scenario!
Once I get paid I'll happily contribute a few quid towards the server as it's by far the best I've been on so this is in no way an anti Matt post

He's doing a great job and I hope it continues for a long time!
would have liked Bronken to continue but think the majority hated BF3, there were too many admins and the servers changed settings pretty much every day to try and keep the things busy which probably wasn't the way to go about it. If things had continued well then we were planning on rolling out a subscription service through vBulletin which allowed people to pay a certain amount a month which was a recurring thing until the user decided to cancel it their end. Something like that would work quite well I would have thought.
On the other hand, if he splashes out on another 3 servers and the donations stop, then he's going to be up poop creek!