Twinks, I love me some twinks and over at /r/Twinks, that's exactly what you're primed to receive. This subreddit currently has over 13,000 subscribers and has been a community for over six years. There are quite a few rules here, but I think that when it comes to pale, skinny boys that are down for some gay fucking, the best place on Reddit to find it is right here.
In terms of updating, you're going to find that new content comes in around 10 times a day. There's a mixture of user-submitted material as well as snaps from elsewhere. There are very few videos, but I don't think that they're banned. Most of the user-submitted material is also aimed at getting personal messages, so if you want to find a twink that's willing to talk shop and potentially let you fuck him in the ass, go crazy over here.