I'm glad someone else feels this way, I get so tired of some of the junk that constantly shows up in my searches.
You do know that you can specify what you don't want to look at, as well as what you do want?
E.g. "CB&Q", "Burlington", -"BN", -"BNSF", -"Burlington Northern" is very useful to exclude stuff that is later than my era. I suppose it'd work on sellers also.....