Currently:
This addon provides an interface reachable by hitting the "Open LD" button in the Guild Roster pane.
Upon clicking this button you'll see a pane that lists out the loot that everyone in the guild has gotten since you've started using the addon.
Every time you load the window, it will look at the guild loot log and store any new loot in your local copy.
You can search by name, ilvl, and item name!
Upcoming:
A second pane that contains a "tier report" which will show everyone in the guild and which slots of gear they have for tier pieces so that you can better hand out tier pieces after raid in order to get as many 2 or 4 piece bonuses on people as possible.