Just making a quick guide on all the admin position types here at SDK.

Affiliate (Affiliatemin)
Accept or deny website affiliate requests. Delete inactive/poor affiliate links.

Blog and News (Blogmin)
Accept or deny submitted blogs to be featured as news. Delete inappropriate/spam blogs and blog comments.

Bulletin Board (BBmin)
Lock, unlock, sticky, and un-sticky threads as needed. Delete inappropriate/spam threads and posts.

Chat Moderator (Chat mod, Chatmin)
Ban/kick users from chatrooms for inappropriate/spam content. May also ban for inappropriate actions elsewhere on the site.

Gameshow Host
Create gameshows for the enjoyment of SDK users. Technically, not an admin position.

Groups (Groupmin)
Delete inappropriate/spam groups/posts.

Paintings (Paintmin)
Delete inappropriate/spam paintings/sprites. Restore accidentally deleted images.

Photographer
Deletes inappropriate/spam photos in the 3D Photo Gallery.

Placebo
Can mail any user, regardless of friend list status.

Pollster (Pollmin)
Accept/deny poll submissions.

Profile (Profilemin)
Delete inappropriate/spam comments on user profiles.

Savii Admin (Saviimin)
Delete Saviis and Savii auctions with inappropriate names/titles or descriptions.

Secretary
Answer inquiries at the Helpdesk.

Terminator
Ban users permanently due to overall behavior.

tWiiter
Delete inappropriate/spam tWiits.