Howard, I have just spent a load of time deleting the 102 very long messages (each message was 10 "PgDn") from this little scroat and removed him. Sadly we do not have a "delete user and all their content" facility, so each one had to be dug out individually.
However, as you appreciate, we do not sit on here all day and night! Though I do tend to login before 7am most days to check for such naughtyness.
And thank you to Saltdirk,Scrapman and Dave Kent for reporting the spammer