Trek, good tip on reporting spam posts, but this was an embedded ad served by TE's adserver. They got some fraction of a cent by feeding it to me.

Once you log in you don't get ads, and on my laptop I have a lot more security measures enabled (I feel guilty about using an adblocker, but I use it just to keep out the moving popups that make you wait an age so as not to accidentally click on them, and as far as scriptblockers, I don't feel guilty about that ), but lately I've been browsing more on my tablet, which has so few security options that mainly I use private browsing, which means logging in and out every session, which means that I don't necessarily login to TE unless I want to post a comment. So that's when I see the ads that are served to forum guests.