k the best way is to filter that muck out. One way is to see this: autogenerated spam results Get to recognise file sizes. It will help you to know what's what. Also see the format of the file. If you do an Any Type search you can filter the results by clicking on the format of the file you're after. eg: mp3 or avi
Also see this: T3 Spammers; mp3 Bit-Rates Versus File Sizes