From Homestar Runner Wiki
The Deleteheads are a fan club about Strong Bad Email in the email fan club. Their president is Strong Sad. The name originates from the DELETED running gag that has rarely been seen since virus. All club members wear a hat representing the "Del" key on a numeric keypad, except for Homsar, whose hat reads "Thump" instead. Each meeting opens with a rendition of a famous Strong Bad-related song (e.g. the Strong Badia National Anthem) and consists of discussions on such debates as "Non Sequitur Champion: Cardgage or Homsar". They mention special events, such as the FHQWHfest, and occasionally place bets on what will happen during milestone Strong Bad Emails. Every Sunday night, they bombard Strong Bad with emails on a certain topic (for example, Bubs's first wife). They have their own website hosted on Angelcities (previously hosted on Geofire). Members also carry membership cards listing their preferred cold one, their favorite Palaroncini, their current status, the most recent Strong Bad Email when they became a Deletehead and their signature.
 Possible Members
These have appeared in at least one of the meetings, but don't have Deletehead hats.