All the columns that end with [other] or contain the text "WriteIn" are free response forms. Specifically these columns:

[1] "BirthSex.other." "Gender.other." "Country.other." "Race.other."
[5] "SexualOrientation.other." "RelationshipStyle.other." "LivingWith.other." "Profession.other."
[9] "EducationCredentials.other." "ReligionType.other." "FamilyReligion.other." "ReligiousBackground.other."
[13] "ReferredBy.other." "RokoKnowledgeSource.other." "PeakPhilWriteInOne" "PeakPhilWriteInTwo"
[17] "PeakCommWriteInOne" "PeakCommWriteInTwo" "NowPhilWriteInOne" "NowPhilWriteInTwo"
[21] "NowCIssueWriteInOne" "NowCIssueWriteInTwo" "PhilosophyWriteIn1" "PhilosophyWriteIn2"
[25] "PhilosophyWriteIn3" "CommunityWriteIn1" "CommunityWriteIn2" "CommunityWriteIn3"
[29] "ActiveMemberships.other." "BlogsReadWriteIn.SQ001." "BlogsReadWriteIn.SQ2." "BlogsReadWriteIn.SQ3."
[33] "BlogsReadWriteIn.SQ4." "ComplexAffiliation.other." "EndOfWorkConcerns.other." "XRiskType.other."

Just replace the periods with brackets.

EDIT: Now they are available in the above post.

I'm going to add these as html/text files to the "Basic Results" section. Thanks for reminding me. In the mean time they're available in the public data release.