This addon runs quietly and invisibly. It simply places your tradeskill information into your Public Note so that your guild members can see who in the guild is at what level when viewing the in-game guild roster.
Public notes will look something like this:
Enchant 327/Mining 364
You can now enter what you want to see in the Public Note. These are stored for Realm wide access and entered through the Addon panels.
This addon also works great with RedBanker (http://wow.curse.com/downloads/wow-addons/details/sc_red-banker.aspx), which if installed will show you which guild member can use any item you pick up, in case you want to give back to your guildies.