Looks like Yahoo is going old style AOL. You should do what AOL did in the early days by being able to use an asterisk as a wild card character to block spam and other email en masse. As an example from one of my earliest accounts on AOL. If I get spam from hacker@scamsite.com. I could type hacker@.com and block everything from Scamsite. Put simply, I could block a complete domain without having to try and get off their spam list individually. It shouldn't surprise anybody that asking to be removed doesn't work, or if it does, it lasts for a week as most. I'd also love to be able to block EVERYTHING from China or any other country (most recently Denmark). In the old days I would enter *@.*.CN and anything from China would be blocked. These days, only individual addresses are blocked while hundreds from the same get through.