Recently, I've noticed a trend towards spam postings that are free of any external link but advertise a product without disclosure. These techniques evade normal spam detection mechanisms by eliminating the link and relying on the reader to search for the program in question, but are nonetheless spam.

 - http://superuser.com/questions/768827/batch-renaming-files-and-possibly-switching-parts-of-the-name/859271#859271
 - http://superuser.com/questions/790527/how-to-recover-data-in-formatted-hard-disk-and-already-installed-a-new-os/857223#857223
 - http://superuser.com/questions/843004/automatic-drive-backups/844141#844141
 - http://superuser.com/questions/796189/blocking-specific-websites-from-browser-pc-and-phone-while-preventing-myself-f/796199#796199

How do we effectively identify and respond to these posts?