How Long Does Data Last on USB Key?

To read this article from PCWorld, click on:
How long does data last on a USB flash drive
There are several factors that can influence the lifespan of data on a USB drive: the quality of the NAND flash memory plays a role, as does the general workmanship of the stick. Cheaper models usually also have a shorter lifespan. Another factor is the number of write cycles, which describes how often data can be written and deleted.