OR use Shareaza and preview the files with one click. Now that its working good, Shareaza is by far the best program. Doesn't matter what you're looking for. Same goes for Emule - about 1% of files are wrongly named. Only thw wmv files are generally fakes.
Another thing i've come to realise, Bearshare's search results are about a tenth of the size of Shareaza's. Search for Wakabayashi in Shareaza and it comes up 10 results or so and in Bearshare none. So for porn at least there is no comparison.