It does not bother me at all, but maybe an alternative solution is to have an "Unsubscribe" button/link/image/checkbox/something on the side of the forums list where you can click on it to unsubscribe from it without the need to go to a different page (in the image I faked a link) so the new forum(s) will bother the users who do not care about them only once (and the link will bother all of us for eternity :))
"The five senses obstruct or deform the apprehension of reality."
Jorge L. Borges?
"Premature optimization is the root of all evil in programming."
Donald Knuth, repeating C. A. R. Hoare
"To die for a religion is easier than to live it absolutely"
Jorge L. Borges