Yes, you can react to posts, but there is an ‘authentic’ twist. To react, you have to click an emoji and send a photo of you doing the emoji’s expression. The person whose post you are reacting to will be able to see the picture of you reacting to their post.
Also: Bluesky now lets you view profiles and posts without logging in
If you have been tagged in a post, you can reshare it. There are a few caveats, though. If you reshare a BeReal that was shared on time, and you haven’t shared one yet, you get a bonus BeReal. However, if you reshare one that was posted late, you won’t be able to post your own.