Unauthenticated user tries to vote: When an unauth user tries to vote a small modal pops up with a login button and a message saying they will get updates for this idea.

Unauthenticated user tries to add a comment or post an idea: When an unauth user tries to add a comment or post an idea they get a message telling them to sign in.

Unauthenticated user tries to flag an idea as inappropriate: When an unauth user tries to flag an idea/comment as inappropriate they are taken to a new page and told to login there.

It's a very strange experience for customers. Please consider looking into this and consolidating the login experiences into one flow.