Recently I donated a character slot to the cause of guild management. One of our guild officers thought it was a good time to start a guild bank system, and since I had an extra character sitting around (goodbye Fela, I'll miss you) I offered my services for managing the guild bank. So we created Donations, an officious little gnome with a penchant for bureaucracy. Our system is highly organized, thanks to minds that are substantially better at these things than mine.
We built the donations system along the gold standard. Each item donated is assigned a point total based on how much gold it is worth in the auction house. I downloaded Auctioneer, and that has cut my research time in half. The guild bank accepts certain crafting supplies along with monetary donations. Any greens or blues donated are auctioned and the player is given points corresponding to the amount of money it sold for. The points are a lot like DKP, you spend them on items or gold whenever you need them. The more points you have, the more points you can spend on items donated to the guild bank, or withdraw in the form of cash should you need to pay for some hefty purchase in the future – epic flying mounts anyone?
So far the system has been pretty successful in its beta phase. Several of us, myself included, were able to save enough points for mounts for our alts. I am hoping that when Blizzard instigates its guild bank system in the future it is something that is this intuitive. I know personally I like being able to get value from items that I cannot use (exactly how much Knothide leather does an Alchemist need?), and it's important to me that we are able to provide supplies to those in the guild who need them. What are you guild bank systems like? Do you tithe, or are the donations all voluntary? And what would you like to see in the guild bank system Blizzard is proposing as an addition to the game?