I found the perfect solution for a free, simple way to deal with a forum necrobumping troll, and it's only taken me 3-1/2 years of membership here to find it and use it - LOL

In any of their posts, click on the suspected 'under the bridge' member's underlined name to go to their profile page, on the left side the 2nd item that appears is the "add to the Ignore list" option, click it and VOILA!, for you they no longer exist and you are free of their childish bother and wasted bandwidth.

You're welcome.