Remember when entering your place names to spell the names of standard locations correctly. Names of towns may change and may have occasionally an alternate spelling, but for counties, try and get them correct as there often are not multiple versions. There are plenty of online atlases and maps that can help you out with this...remember:
It is Culpeper, not Culpepper; Fauquier, not Fauquire; and Harford (MD), not Hartford.
If your spellings of standard locations are incorrect, some may wonder about other details you have in your records.