Okay, in WoW, we have a guild bank. GuildPortal recently announced apartnership with Allakazham. I would think one could be able to put thetwo together easily enough. Here's how:

1. Mark given members as 'mules'. These alts are just to hold bankitems. If they own it, it is 'in the bank'. This eliminates all manualtracking of what is in the bank.

2. Link to Allakazham for all items. Instead of the existing importfunctions, just have mouseovers pop-up the proper item in the usualformat. This eliminates all manual entry of new items.

3. Provide diffs of the items each time a upload happens. All new itemscoming in, are added automaticly. All items no longer in the bank, arelogged as transactions that need to be accounted for by the bankerusing the normal 'sold to xxx' tools.

4. Maybe see about making mods to wowreader to track in/out items? Readmail coming in to credit the one giving the item and deduct from theone that something is mailed out to? Same with trade screens?

From what I've been told from CS, GuildPortal no longer supports Allakazham's wowreader thing.

We use rpgoutfitter with great success and no real ongoing maintenance following initial setup (which is not too tasking).

I would also highly recommend rpgo outfitter for both bank and roster functionality.  It is truly awesome and once set up requires almost zero intervention to keep up to date.
http://www.rpgoutfitter.com/

You can also use their remote services feature to build their page directly into your guild portal page.  for an example of how it looks, check out my roster and bank pages below
http://www.guildportal.com/Guild.aspx?GuildID=68353&TabID=592123

Haven't seen Wowroster, but RPGOutfitter is active on development and have great funcionality. I'd recommend them, especially for sorting out bankalts.

Oh, and Markstrader, I totally worship your website!