Is there any content filtering? When I went on to Image Locator, then "See an example" it will search for imgur.com. The first page of results shows 'thebiglist

Is there any content filtering? When I went on to Image Locator, then "See an example" it will search for imgur.com. The first page of results shows 'thebiglistofporn.com', 'entensity.com'(Not sure if it's NSFW, but it looks it from the thumbnail.) I know it's not too much of a big deal, but porn thumbnails wasn't something I was expecting to see on a websites example page.