Don't know what browser folks are using, but some offer forum management add-ons which allow you to block posters by screen name. Firefox has one for vB - there may be others.
I'm too old to read the BS that some of the youngsters are spewing here. Mostly I enjoy reading the posts here I don't want to be an *** and name names, I do not want to hurt the feelings of some kid but there is one poster that in particular I could do without seeing the posts of.
Yes. I know this is a big feature that a few people want to have back and it is coming as soon as we get the new version. (Developer now said weeks not months, so less than 4 weeks I am guessing.) In case you are interested, here is a post about some of the features coming down the pipe for the next version: http://xenforo.com/community/threads/development-update-may-2011.16084/#post-211750