Location in NewzScape: Setup Menu -> Size Filter
When the Size Filter is turned on, NewzScape will skip single-part posts that are smaller than the size that you specify. The primary use of this option is to filter out pictures that are posted by spammers who like to use smaller files because they can be posted quicker.
This filter is not applied to any of the parts of a multi-part post. For example, a large picture may be posted in three parts, the last of which could be very small. That last, small part will not be skipped and the picture file will be downloaded correctly.
When you first use this filter, you can see what files are skipped via the Reason Log.