The cordelete is one of the most versetile piecies of equipment I own. There are many climbing related uses for a cordelete whether you are using a 7mm or tech cord.
Such as: Anchor constuction, Prussiks (self rescue, glacier travel, raising system...),Passing a knot on rappel or in a raising or lowering system, Improvised harness, Escaping the belay, Load transfer or backup, Daisy chain, Etriers short handline...
Other things I have used my cordelete for are: Rutschblock cord, Teaching usefull or obscure knots, Rescue sled, Food hang, Clothesline, Forgotten skins.
Obiviously after certain applications it would be retired or put to other uses like Tieing crap fom IKEA to the roof of the vehicle, Dog leash, Macramay (sp?), BDSM play and it is probably just enough rope to hang yourself with.
Cordeletes Rock!!!