It is okay
@nicodak , I don't mind side discussions. Any post bumps this thread so it helps gaining exposure so we might get more votes.
Yes registrations does not mean activity like you explain. You are right, but don't underestimate registrations either.
I want to quote myself from another thread:
Thirdly, having them registered means in future it will be much more easier to turn them into active users. One hurdle is overcome already. So they will be more inclined to write a post. Now I can send mass e-mails (like weekly digest) and automatic private conversations after successful registrations to welcome them and introduce stuff. Now one can make use of usergroup promotions and maybe some hidden content will be usable for them.
So, even if they don't participate afterwards, now they are in the registered usergroup and you can use that for your advantage like weekly digest or welcome PMs.
In addition, don't forget they already posted at least once, as this feature is all about that. So, it automatically introduced them how easy it is to post whereas normally unregistered guests might not be inclined because how "complex" it can be to post.
And one more important thing. Registrations can be used as a metric to see if you are doing it right or not. It doesn't matter if they get active afterwards at first. What matters at first is they decided your site offers some sort of value or platform so they decided to register. If your registration numbers are gained organically (not by manipulating the database or through bots/spammers or by having an old board), you can use that as a guide for your success.
Nobody likes empty boards with low amount of registered users and logged in users. Each registration also counts as a log in, so you can make your board look like active by displaying "last active 24 hours widget". A registration counts as activity and shows some people were online. It helps people seeing that your board has some value.
and (2) because I don't like the idea of unregistered guests posting.
But I think you misunderstand. The whole idea of this feature is that after posting it makes them registered. It is the same as if someone registered before and then posted. It is just the other way around, they first post and then register. In both cases the post is attributed to a user account.