Spanking Online is a huge site dedicated to teaching naughty chicks how to behave correctly by administering proper physical punishment. You'll see bad babes spanked, ass-slapped with shoes, caned, and whipped with switches along with some other methods of applying brutal, remedial correction.
SpankingOnline is not a very attractive site, but navigation is alright once you figure it out. The quantity of kink is almost overwhelming and falls into several categories including OTK (over the knee), domestic, severe and a few more depending on the section you visit. There are also archives going back seven years.
In total, there are some 250 picture sets and about 285 videos available. The films are downloadable in short clips or full-length files. Playback for the older scenes is mostly in RealPlayer format, while the majority of them usually come in Windows Media format. The WMVs generally look better than the RealPlayer ones from what I saw and they all look better than the quality numbers would suggest. There is even a new HD movie section. Plus, the photos are mostly high-res.
The different scenes take you through matrons punishing lasses who have been willful, strict ballet teachers who want only the best dancing from the ballerinas in their care, Headmasters who need to keep their students in line and more. The red, swollen flesh of tender tushes is smacked again and again and thanks to the HD videos now available, you'll see every glistening bead of sweat and tear drop.
Content isn't all exclusive and many of the scenes are taken from various movies and other sites in the network (they say so right on the site). However, much of it does seem to at least be exclusive to the network. In the end, Spanking Online is definitely worthwhile for any true connoisseur of disciplinary action.