Spammers now post visitor messages that are not searchable

[taylorpiano]

I just discovered that some of the new users I approved this year that looked legit, are now posting spammer messages with links to their products on the visitor messages of users profiles.
There is no way for me to search how many visitor messages that spammer posted. I can only search if they posted messages in forums, which in this case, this user did not because they knew they would be detected immediately.
How can I easily find these messages?
The ones I stumbled on recently all have links to their products with codes that obviously mean they are making money on the clicks alone.

[Lats]

Try this query in phpmyadmin where you can delete selected entries easily...

SELECT 
    postuserid,
    postusername,
    pagetext 
FROM 
    visitormessage 
WHERE 
    pagetext like '%[URL%'