depends on how much you use it
I think we differ totally on the use of formatting
I'd only ever do it if I had to - I delete files - occasionally a card refuses to work ... only then would I reformat
it theory at least ... the first manufacturer's "stamp" should be more accurate ... (arguably)
Fo3 uses format to clear the disc .... (or kill the klingons) ....
not how I'd do it ... but it's not wrong ... and you could argue that formatting a device "balances" it.
my "way" is based on the hour long prep that the original HDDs needed - and the disasters if you didn't ...
but with modern kit ... it's a different game entirely I don't ever remember seeing a recommendation either way from a techie source so I can't really justify or argue either point
however something I can say for definite - If you do end up with card that won't do anything
this is a handy little prog
http://files.filefront.com/HPUSBFWEXE/;7241778 ;/fileinfo.html
will generally sort it out
get it now .... before you need it