I made a hosts file that has the following entries in it:
127.0.0.1 localhost
127.0.0.1 tribalfusion.com
127.0.0.1 a.tribalfusion.com
127.0.0.1 speedera.net
127.0.0.1 tribalfusion.speedera.net
and I haven't seen an ad here or had any problems since. I don't like most of the pre made hosts files, they block many sites I want to get to, but these four entries (the last four in the file) have worked wonders for me here for a very long time.