Pictoa is a Pintrest alternative that made a name for itself as a cross between being a pin site and a search engine. It's not the easiest thing to explain, but the basic premise is that you enter keywords and results will appear that are directly related to what you want. Think Google Images, but a hell of a lot better for gay bros that are looking for porn.
The material here is mainly amateur in nature, although I will say that quite a few straight scenes appear in the content archives. Escorts also promote themselves, which is a little problematic because well, I don't want to see 'Asian MILF in NY' filling up my feed. Alas, the problem is easily overcome by just checking out the cocks instead of the dicks.
The site is very minimal and doesn't have any advanced filtering options. It's not ideal, but a much better alternative to Pintrest if you're a gay bro looking for some entertainment.