When visiting a vendor, by default your backpack will open. With this AddOn installed, all of your bags will be opened for you automatically. Small, simple - but useful if you're too lazy to hit Shift-B all the time like I am
To install, simply extract to your WoW/interface/AddOns Directory
Now also works when Trading and at Guild Banks.
Commands:
/vb off - disable vendor bags
/vb on - re-enable vendor bags
/vb bank - toggle opening & closing at banks (default: on)
/vb bankBags - toggle opening of bank bags (default: on)
/vb mail - toggle opening & closing at mailboxes (default: on)
/vb show - display current settings
/vb trade - Toggle opening & closing when trading
/vb ah - Toggle opening & closing at Auction Houses
/vb gb - Toggle opening & closing at Guild Banks