Be very wary of closing down very specific use cases and treating (for example) "every question about photo editors" like your trying to build a general encyclopedia of software reviews that will work for everyone — That is NOT what we are here for.
Ideally, this site is going to be filled with long-tailed, specific problem statements where the "solutions" are highly custom-tailored to the original author specifically. And ideally, these questions should be specific enough, that true duplicates should be somewhat rare.
In reality, you should embrace the infinite variations of asking about the same software categories over and over. This is the long tail of specific problem solving that is going to make this site "work." This is by design.
The Long Tail of Software Requests
The "Software Recommendations" Stack Exchange is not a traditional software listing and review service like download.com or Softpedia. We are not here to duplicate those efforts. We are trying to bridge that gap between generalized software reviews and solving "real-world problems" that they don't already cover. The way we do this is by being a Q&A site where folks ask very very specific question that are difficult to find the answer elsewhere. You are asking very real questions that only a few out of a large group of people can answer based on personal experience through actual use.
How does specialized advice help the rest of us?
When folks google "photo editor reviews", they are going to find us here talking about real-world problems. That is going to separate us from all the other reviews out there. We are not going to be tossing about vague platitudes and broad, sweeping generalization about what is the best software of all time. We are going to be talking about very specific use cases that helped us specifically. And folks will be able to learn by integrating these specific experiences so they can make more informed decisions of their own. This is learning by example.
This isn't a generalized, one-size-fits "best of category" collection.
The Ubiquity of Generalized Reviews
When someone is casting a really broad net ("What is the best photo editing software?"), the community is really only guessing what will help that user specifically. We use the phrase "not a real question" because it doesn't reflect an actual problem the user is having. Answering it is just an exercise in repeating what everyone else says or chiming in with your favorite piece of software for good measure. Taking those recommendations verbatim is a blind leap of faith that those recommendations will work for you, too!
Hopefully we are not hosting these opinion polls and "people's choice" awards at all. But if these questions do make it onto the site, it is certainly worth closing similarly vague efforts as — "we've already had that conversation."