Ok I get what you are saying but the only thing that I can figure could go wrong is if you remove it during a data transaction because that would mess with the MFT and transaction log. I intend to use safe removal anyway, I usually always do. There may be other things that could go wrong, but I can't figure anything that could not be fixed by a format and like I said the data is not critical. I'll keep using it and report back here every so often. Also I checked, if the flash drive is rendered unusable then I'll get swapped out under warranty as the warranty booklet says nothing about not formatting the drive NTFS.