With what I write, that's definitely my big concern. I have added very few people to my f-list since that little fiasco. It still concerns me to see the tags on my responses, even though they're a "from" not a "link to." In theory, those on the f-list cannot link comments to your posts to the other social networks. In theory. I have my teen, his friends, customers, people I train, etc on FB. I don't think they'd understand my fic, particularly slash, particularly the dark slash. You may count on discretion from me as well, should you decide to friend me back. I treat LJ like Vegas--what happens here, stays here.