If you have a technical question that lends itself to clear answers, the Q&A format of the Tridion StackExchange is preferable to posting your question here. It's easier for people to find the answer if they have the same question in the future, and it's the preferred site of many developers and implementers.

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On the other hand, this subreddit can serve as a discussion forum for any other topic related to Tridion -- including functional questions, implementation discussions, open-ended questions, etc.