Q:

Am I the only one who feels this site is essentially a compilation of puzzles from other sites?

The past few days we've seen a huge influx of puzzling.SE questions, but strangely enough, most of them I recognize from a long time ago, but often times these "puzzles" are reworded awkwardly to make them sound unique.
I'm not sure if it's just me, but I feel as if this site is slowly becoming a compilation of puzzles from other sites. I think it is rare that we get unique puzzles that people have created themselves, and instead we are getting content that is accessible elsewhere that is now slowly getting into this site.
I may be wording this wrong, but I feel as if the quality of content on this site is becoming rather lacking. We are not seeing unique questions, but questions that have been rehashed from other sites.

A:

Other than dwindling question quality, I'm not sure this is a problem.
There are countless Stack Overflow questions where someone asks an easy to answer question, and people respond with "Do the research yourself" or "the first Google result tells you". One way or another, the question and its answer become very popular and the question becomes the first Google search result. Thus, a question that is "low quality" by SE standards becomes the place to get the answer to that question. This question is one such example; it's really easy to find in many different places, but now the SO answer is easily the best one available.
Now, maybe programming issues lend themselves well to the question/answer format SE is going for, but maybe we can see the same phenomenon here. If we post "the same old puzzle" here, it might get oddly insightful answers from odd and insightful people. We might get people who link to similar questions and answers, or three answers that tackle the same puzzle three different ways, or to three levels of rigor and detail. All of that goes beyond "here's a riddle and there's the answer". Daydreaming aside, I think there's value in having it all in one place; it would be nice to think of a puzzle and think, "hey, I'll see if there's anything on Puzzling like this".
So if you see a repeat of a question on Puzzling, absolutely flag it as a duplicate. Draw the asker's attention to the original, so it can get more upvotes and become the place to look for such a puzzle. If you see a question that's just too simple or otherwise not high quality, "downvote it into oblivion" or flag it appropriately. But as far as I'm concerned, asking a question another site has asked (answered) before is a chance to ask (answer) it better.

A:

Quality is separate issue from originality. If anything, puzzles taken from elsewhere tend to be higher-quality, since they have been test-solved by many and regarded well enough to spread. 
Whereas, original puzzles are liable to have holes or ambiguities or require reading the poster's mind. It's hard to make a good original puzzle. There's plenty of puzzles here that seem to be self-created, but many just aren't that good.
I can understand being bothered by most of the puzzles being ones you've seen before, or that the community has generally seen before. I'd favor a tag for self-created puzzles if that helps.

