Hashtags might make it slightly more obvious, and the Tumblr-like or Threads-like tagging system is fine too.

Either way, I'd recommend just doing it, as it can be one way for older content to be more easily found.

Definitely more tumblr like, I pretty much prefer everything about how they do things compared to twitter personally!

Depends!

ooh actually this is a good question.......... maybe a mix of both?

Tumblr's method for me.

Whatever it is, make them a separate field. Nobody likes #Hashtags #Littered throughout the #Input #Field

I #dislike #hashtag #talk. I don't mind the "#" symbol, but that inlinery has got to stop.

I prefer a hashtag. There’s no ambiguity that way.

i think twitter tagging system is funnier but id prefer tumblr's honestly it's way more cleaner

As someone who usues both sites, i think i perfer the Tumblr-like system just a little bit more

I feel like out-of-band tags would be less obtrusive. Questions like "What is your #favorite #pokemon?" look more distracting.

The Twitter hashtag is cooler

I'm not sure what purpose this would serve beyond vanity but I feel the #hashtag type more appealing.

hashtags. that way #susananalbumparty is a lot funnier.

susanalbumparty vs "susan album party", don't see myself using it, but the tumblr version seems much clearer.