Not sure it would be related, but python.com used to be a startling high-res extremely NSFW spread that you really didn't want to accidentally visit in a public setting when you really wanted python.org...

(They are now 'no longer accepting new affiliates' though, and the pictures are gone.)

This was also blocked at work:

>http://blogs.sfweekly.com/foodie/2013/12/amazonfresh_has_lau...

But the main site (http://www.sfweekly.com/) and the blog site (http://blogs.sfweekly.com/) aren't blocked. I'm going to guess my work filter is just screwy.

None that I'm aware of.