The ​regex​ filter reads a list of regular expressions from this page; each regular expression (case sensitive) being on a separate line inside the code block. This uses the ​​Python syntax for regular expressions. Submitted content will be assigned a negative score (“karma”) for each match, and the total karma determines whether a submission is rejected or not. This is a read only page, so contact a trac admin (see MAINTAINERS) if you want to add something.

(?i)quickbooks
(?i)viagra
(?i)kaspersky
(?i)customer.?support
(?i)customer.?care
(?i)customer.?service
(?i)help.?desk
(?i)help.?line
(?i)contact.?number
(?i)phone.?number
(?i)service.?number
(?i)toll.?free