Help!

A reader writes:

My system uploaded an update to the Norton internet security web site list yesterday and your blog was on it. It was blocked by for containing “Sex acts.” Unless your blog has some hidden features I haven’t discovered, I suspect that you were put on the list by someone as a means of enacting liberal free speech (Speech for the left, but not for those who would disagree with them). I’m not sure what the process is to get you on or off the list (or maybe the hidden features make it a fair cop).

This is the first I've heard of anything like this. Is it really happening, and if so, what can I do?

UPDATE: I'm getting some good help in the comments, and just to be clear, I don't actually think it's a political plot. It's most likely that they just have an aggressive program, and since I talk about sex here sometimes, I got snagged. You probably don't want your children reading my blog. This isn't a blog for little kids! Anyway, it sounds as though Norton/Symantec is going to be secretive about how they operate their filters, so what can you do? I've thought of deleting all the F-words, but it's a lot of work to do that. And who knows how to get off the list once you're on?