Originally posted by nev49 How about it? Each move just eats into your timebank.
It's possible, the site can handle it; in fact there have been zero timeout tournaments if I recall correctly.
The problem is that the New Game interface is overly restrictive; it currently uses a dropdown list to enter these values. It should rather simply allow entering any number from 0 to n, so the same flexibility is available to non-tournament games.
See the following thread http://www.redhotchess.com/board/showthread.php?threadid=28930 where this has been discussed before.