Maybe someone out there doesn't like you.
I know what you mean. I posted something a few days ago that had a link to a website and it got deleted instantly. I've seen other post with weblinks to it, I don't see why I was the exception. I've even tried deleting my own and nothing happens!
I figure being even the slightest bit offended doesn't govern deletion. It is a misuse of power against the freedom of speech!
Of course one must beware since some countries aren't free speech oriented while the internet is international.
The meaning of life is curiosity; we were put on this planet to explore opportunities.