I have to agree that the chances are slim. Copyright laws are killer. However, if CN and Nick agreed (another idealistic but unrealistic possibility) and saw it as profitable then I think it could work. As for looking on the netfor free, that never seems to put a dent in sales. Megatokyo is free to the public but the book sales skyrocket everytime a new volume is put out. Plus other online comics (i.e. Machall, RPG World, etc.) sell books as well and there appears to be a sizable demand.
"...and one day we no longer let time serve us, we serve time and we are slaves of the schedule, worshippers of the sun's passing bound to a life predicatated on restrictions because the system will not function if we don't keep the schedule tight."
-'"Repent, Harlequin!" Said the TickTockman' by Harlan Ellison