I've been conducting a lot of Charleston research in order to assuage my pangs of jealousy regarding not being in Charleston for the NGS this year.
I was extremely happy to see that the FamilySearch site added two invaluable resources to their records this month:
* South Carolina Probate Records, Bound Volumes, 1671-1977
* South Carolina Probate Records, Files and Loose Papers, 1732-1964
If you research in South Carolina (particularly in Charleston) this is a huge addition to your online resources. Enjoy! I know I will!