Landing Frequency (USA Pilots)

All -

How many of you in the USA use the same frequency when flying cross-
country as in the traffic-pattern?
(i.e. you _don't_ switch frequencies when you're returning to the
airport and preparing to land)

As an alternate way to ask the same question: How many soaring sites
have you been to, where they didn't have a separate frequency for
landing traffic?

[this may seem like an odd question, but I have a good reason for
asking]

Thanks,

--Noel