these O.T. threads demonstrate why an "ignore button" won't work here:  they have some kind of irresistable draw on users, even though they always turn out the same.  what users are really expressing when they request an "ignore button" is the age-old desire to get rid of people, to hound them out, to exclude them.  fortunately, those days are long past, as the site has evolved to tolerate users of all kinds.