Q: Challenge Responses

For challenge reactions, do people think it's a better idea to simply:

1) Create new posts?

or

2) Respond in the comments section?


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That's probably the only other big question left; after this, I'll likely stick to a certain format, and we can switch it up if it doesn't work out.

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I'd say create new posts, only because I'm less likely to go back and find the entry to read new comments. But the new post would show up on my friends list, so I would easily see it.
Make a new post, but with a -link- to the original 'challenge' post and tags for each challenge!
Maybe we could have a "challenge post", and then a certain period of time to complete the challenge, after which a "reactions post" can be made where people post their reactions to that challenge.
I prefer to have a place to respond with comments.
But maybe people can make posts as well if they want to.