Yes, though you have to be a member to search the database. PPL say: "Anyone who has performed on recorded music can join PPL as a performer member." Dick would obviously qualify on that basis and I don't think it would cost anything.
(I don't even remember paying, and that was as a record label, to register a recording)
By clicking on the User Name, you will requery the forum for that user. You will see everything that he or she has posted with that Mudcat name.
By clicking on the Thread Name, you will be sent to the Forum on that thread as if you selected it from the main Mudcat Forum page.
By clicking on the Subject, you will also go to the thread as if you selected it from the original Forum page, but also go directly to that particular message.
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sj