Mar 31st 2009 3:03PM The authenticator can't run out of numbers, but it may repeat one after a few hundred thousand (literally) have been generated. The point is, the numbers are random, so it's strictly coincidence.
The battery should last for about 5 years, maybe longer, after which you would have to buy a new authenticator.
Aug 27th 2008 4:04PM Has anyone found any benefits to having Revered or Exalted reps with old world or Outlands factions with a strong tie to the Northrend storyline, e.g. Argent Dawn? Or having certain items, like an Argent Dawn Insignia or Ashbringer equipped?