1. Block spammer
The First thing to do, when some dear nice chappy (or chapess) starts playing silly buggers is to block them.
At the moment only admins can do this. This is done by going to
site manager» blocks» User blocks
at the bottom of the page is + add user to blocklist
Enter the offending user name and a comment as to the reason for blocking.
Once that is done then there is the clean up to be done.
2. Delete posts
delete the POST, and ONLY the POST —NOT the THREAD
Rename the Thread to "spam"
Change the text in thread description to "spam" (using edit title & description )
Do not Delete the thread but MOVE the THREAD
3. Move the thread
(using move thread) to the hidden category Hidden : per page discussions via the drop down list
Note:
Sometimes it takes awhile for the offending threads/posts to disappear from "recent posts" and "recent threads"
further reading:Here
Authors
Phil Chett. Please visit his/her userPage.
Craig Macomber. Please visit his/her userPage.



