3 they dont last forever, but this is normal!extent | 22/10/2009 | See all extent's reviews (2)as with ALL flash drives/sticks, please remember that they will all only work for a LIMITED amount of reads and writes, before eventually giving up and not working at all-this is perfectly normal! they simply do not last forever. when your own stick does eventually give up, you will never be able to get your data back - so only ever use a flash stick to transfer files from one pc to another, and NEVER use a flash stick on its own to store important files, unless you have backup copies of the same files already on your computer. I have had 2 flash sticks (different manufacturers) and both gave up in the end, after around 3 to 4 months of heavy usage. add your files to your stick, but do not delete them from your computer. the only other thing I should mention is that flash sticks are very slow in transferring large files both from and to the stick - so with large 16GB flash sticks, you'll need some patience if you work with alot of large files!