If you're going to change it, might as well go all the way with regular
expressions. But only having contains/doesn't contain is a major bummer.
At least give us "equals". Example - filtering out referring domains in
a report - say we ran a bird website and wanted to know all the
referrers from birds.com. If I want to see traffic from just birds.com I
create a filter for contains "birds.com". But I get:
birds.comsongbirds.combluebirds.comwaterbirds.com etc. because they all
"contain" birds.com. ...