When I read Hello World 2.5 I was shocked. Some people are really bad people. Several sites about Ubunut/Linux seem to have copied blog posts from Ubuntu Planet without telling the original poster or license. Someone even relicensed it!
I decided to license my blog posts too. I don’t know if anyone ever wants to use what I’ve written, but you never now. 
I chose for
This means that all content at my blog, made by me, is licensed under this license. Of course all work by other people isn’t licensed. I’ll try to tell everytime I use something under what license it is released from no on and who’s the author. If you think that I violated your copyright, please don’t hestitate to mail me with your concerns.
Its really crazy if you google “1c28bf7c5807e22eafba40238b4af4d5″ you can see all the sites that are ripping planet.ubuntu content
That’s a nice idea! Is it an encoded string?
(c) feed will generate a string for you, I think its pretty much a random string in the hope that it wont appear anywhere else on the web, guess its on your site now lol.