I guess one just have to avoid downloading files that are extraordinarily too small for the file they are looking for. Like say for example a 364 KB Smallville EP4.wmv. Also try checking the "Browse Host" button if its on or lit if you click the file from the selection of downloads. If it's not then you can suspect that it may be a spam. And perhaps if we ever downloaded these type of files we should delete it right away so it won't be downloaded by other unsuspecting victims.