Hi! I've known about this since last year, but it is still confusing me, I'm not sure what posts should be tagged. I understand the part about special or short term activities or blogging/writing articles or fic during the time period in personal journals, but I'm not sure about including regular/ongoing challenge communities.
Would a icontest challenge work for this? This one here: https://screen-icons.dreamwidth.org/10898.html
I posted the round on the 29th and it runs until the 16th so that's the correct time span, but I didn't want to tag it because it's a regular challenge, that I would have posted anyways, not special for the Three Weeks. Should I edit the post to add some info about three weeks and a link back to this comm and then tag it? The post won't be on the feed because it's a few days old. What if I post some screen caps at capshare or my own comm during the time span, would that qualify to be tagged?
By next week I'll have to put a new challenge up at iconthat, could I link back/tag that for Three Weeks if it ends after the three weeks is over?

I posted the round on the 29th and it runs until the 16th so that's the correct time span, but I didn't want to tag it because it's a regular challenge, that I would have posted anyways, not special for the Three Weeks

Anything happening exclusively on DW for the three weeks can absolutely use the tag, even when part of a regular posting schedule :)

Same for anything else you or anybody else posts exclusively to DW during the fest.

could I link back/tag that for Three Weeks if it ends after the three weeks is over?
Any challenge that goes up during the three weeks can use the tag, anything that goes up after the three weeks, I'm thinking no.

Hope that clears it up?

Yes, it does thank you! ^_^