I want to upload little examples how to do things in R. So far I'm using github but I also want to have it in a readable form. So I'm searching for a good webtool to publish my Rcode.
Off the top of my head I'd suggest 'Beaker'. If you are familiar with the 'IPython Notebook', that's about what it is like, just expanded for various programming languages (including R). Especially if you mainly want to share example code and its results and not write long blog posts.
Here is the main page (http://beakernotebook.com/) and that's what an exemplary shared notebook that uses R could look like: http://sharing.beakernotebook.com/gist/anonymous/a119ba0126f280b2d041