Let me preface this by saying that Fountree has always been dumb - nice but dumb.
While I was in handling the guild bank/sales for a few months, I was the only person ever in TMO to keep a detailed ledger of all sales and purchases. This went as far as even keeping track of all spell sales, not to mention sales of items and MQs. I also spent a lot of time organizing the spell mules (I alphabetized them after moving all the bullshit spells - like Aegis of Ro - that dropped at every raid to an overflow mule). This spreadsheet was available to TMO Officers and the Loot Council to review at all times. We had a post in TMO Officer forums where people would indicate what they sold and for how much, but certain people got lazy, and it really wasn't all-inclusive in the sense that it wouldn't show how much guild plat a person had at a particular moment.
Here it is:
https://docs.google.com/spreadsheet/...=sharing#gid=0 - the real ledger is at the bottom right. As you can see, after a while I started keeping track of not just the amount the item was sold for, but also who it was sold to and on what date. I really made a conscious effort to be beyond reproach. And what do you know? People trust me - always have!
I was always fully honest and kept my own holdings separate from TMO's.
Not all items being sold were held by me. I generally just looked at the bank spreadsheet to see what we had in this regard when making a post. More than once, items we supposedly had banked weren't there and it put me in a tough position trying to sell them because Eccezan/Zeelot/DD had ninja-sold them. I'm not saying there was wrongdoing necessarily, but it seemed like the only people interested in keeping the guildbank list current and accurate were me and Zagum.
When I quit blue, before I started selling my alts' gears, I handed all my guild holdings off to Zagum. This amounted to a stack of plat and a few Trak BPs and VS Legs.
Prove it?