I read and write fanfic, and create manips.
Since my ships of choice are slash (Nick/Greg and sometimes Grissom/Greg) I do not share my stories with my family, although they know about it. They are very religious and are not accepting of the gay lifestyle (keep in mind I myself am not gay, I just like the guy on guy action).
My husband knows about what I write about, he knows my love for Nick and Greg but he's not interested in knowing more (if he was I'd worry-LOL). I had a small number of co-workers who knew I write gay fanfic but I didn't go into detail or discuss it regularly, they saw it as weird. I since changed jobs (same company different location) and do not discuss it with my new co-workers nor do I plan to. I've learned its best to keep such things quiet.
So I just post my stuff on line and share it with people who share my interest and love for Nick and Greg (or Grissom and Greg).
I'm also writing and reading fanfics.
Slash is not popular in my part of Europe (shipping in general too, though). My family even don't know what the shipping is. They just don't know in what other way I'm watching CSI. Only my two friends know that I'm a slash shipper. They both think that's fun but not really into it that much how I am. I'm also from religious family but luckily a little bit more tolerant than usually people here. But definitely I won't share it with them (even tolerance has some limits and I think slash shippng would be that limit). My friends from school, uni totally don't know about it. And better if they never know that.
Just like you
Wojo I've learned to keep my interests in quiet.
So I can say that I'm in closet with my Nick/Greg shipping but it's good to meet people online who share the same interests. It's much better than talking about it in real life. When someone is not watching CSI can look at you weird and think that you're crazy etc. A little bit harder is when someone saw the show and totally don't understand where I found signals that my two favourite characters are homosexual.