Sorry, I didn't imagine responding with an informative link would be assumed to be a direct insult, even if you may have read it before (others may not have, and this is a public discussion). I also don't see how linking to valid information is considered an "appeal to authority", failed or otherwise. Should I have decorated the link more?
As far as I can tell, from the wikipedia article, Nature article, and Blackburn's Nobel presentation, telomerase actually rebuilds short or damaged telomeres, which would seem to make them not so much of a "hard" limit. Obviously there is far more to the ageing process than telomere shortening, and naturally errors in the process will accumulate and eventually defeat this (as with cellular replication in general), so nobody is claiming this is the key to immortality or anything - but it's certainly a significant piece of the puzzle.
If my understanding is incorrect, please do enlighten me (even with a simple, undecorated link). Your responses so far have left me none the wiser.