UnderFeet has 142 high-res galleries and I appreciate how they're set up to allow you true hands free enjoyment. You can see the frames flash by in an automatic slideshow that lets you customize the delay between one photo and the next. You can also download each set in a convenient Zipped format. To be fair, it will appear at first glance that there are many more photo sets than there are vids, but this is because there may be multiple galleries shot during one video shoot and they each have enough pictures to be counted as individual scenes.
There are about 73 videos. They're a trickier to count. It seems that most full-length movies are spread out over multiple updates and those updates are further split into partial scenes. The clips are in Windows Media format, which provides average to good-quality playback. When you combine all the updates and clips, you end up with some movies that are over half-an-hour long as well as many that are around the 19-minute mark. There may shorter standalone vids coming in single updates, but since sometimes scene parts aren't added in sequential order, it's not always clear when an update isn't a continuation of previously added scene.
There are no full-access bonus sites, but you a few main site extras. You can read bios for many of the mistresses on the site, as well as write in the online guestbook, which is really a forum for your feedback, suggestions and scene requests. Main content is updated at least twice a week, so the site should continue to grow at a regular pace.
One major drawback with the site is its price. They charge what you would normally pay for a mega-site for this standalone site. Under Feet is a site that might be worth it for a true lover of femdom porn with a trampling theme, but it needs to be a few dollars less to join, or it could at least make all its videos consistently good-quality.