[sontek]

I'd suggest maintaining two accounts. One that allows NSFW and one that doesn't. This is what I do, because you are on a user generated content site.

I don't mind NSFW content at all but if I'm surfing reddit in line at the bank or something I don't want that content to pop-up with people around me.

I don't believe its reddits job to filter the content out though. They already warn you if you click on someone's profile that is an NSFW profile so you have to agree you want to see their posts.