Give invites an optional description

I have a server for a gaming community and we have a lot of invites used in various places in-game as well as on our website. This, mixed with invites made by the community, leads to the server invite list being quite full. Trying to moderate invites (such as removing one that isn't used anywhere anymore) is difficult as I cannot always remember where they have come from.

My suggestion is that on the invites page, there should be an optional description field for each invite so we can describe where it's used ("this invite is used on the forums homepage) etc,.