Travis Jordan wrote
running the blower to circulate air won't reduce the total
load on the compressor.

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Yes it will - in some cases such as a poorly sized blower
or a poorly sized AC system. I've know people who had
to set the thermostat to 68 in order to keep upstairs rooms
at 76 or so. And the basement is around 64. This is
compounded when people are active in upstairs rooms
with lights, stereos, computers, etc. turned on.

Generally, running the blower fan 24/7 enables these
people to raise the thermostat and still get good
climate control in the parts of the house that need it.
And their electric bills drop.