This isn't an attack upon you, but I've come to despise this term "RINO." It's used by purists who wish to stigmatize Republicans they don't agree with, and it usually is followed by a statement that "I'd rather have a real liberal than a pretend Republican."
I was curious about this, so last week I went to the American Conservative Union website to look at the conservative ratings of a bonafide liberal, and a bonafide "RINO." According to the ratings of the ACU, Barbara Boxer rated a "5" with her voting record last year. Olympia Snowe, everyone's consensus "RINO," rated a "65." I'd take Snowe over Boxer, or just about any other Democrat, any day.