Hi AOC,
robots are mainly 'search engine crawlers', could be some written to recon from our opposition
Guests - they have IP showing and you can check where they are viewing from, but in most cases, it could be members who are not logged in.
I try to look at this data from time to time, we often get spam registrations too which the software picks up - but can get through and that is why we ask members to report it.
Hope this helps.
T.