Glorum seems a real simple service, it is being used as a Q&A service, and a lot of the questions are programming based.
Basically to add an item give it a title and description and tags.
Browse the recent items, browse items by tag, browse a users recent items (also by tag)
People can leave comments, and rate items.
It is a very easy and self managed Q&A service…although it does remind me of other types of services, as it is kind of like having your own generic blog within a communal service (different than del.icio.us as every item has a permalink).