Attempting Battery Replacement?

[ghilt]

While this thread subject has been touched upon elsewhere, "Search" didn't find much in the Fuze subforum.
Our Fuzes are getting somewhat long of tooth and Li batteries are known to have a finite life (both calender time and number of recharges - limited), has anyone purchased a Fuze battery replacement (ebay shows two vendors) and installed it?
While I'm not against progress, why throw something that works well for an ipod?