[honzacz]

The Jekyll wiki at github and the example pages there provide quite a lot of useful examples including plugins such as SASS and HAML compilers, category archives or comments (using Disqus)

If you want to tinker with Jekyll more, I would recommend looking into Octopress, which is a blogging framework based on Jekyll, that offers a lot of advanced features and plugins not available in plain Jekyll...

[octopress]: http://octopress.org/

[mmisu]

Not a big fan of Disqus here, same goes for using Facebook comments.

Thanks for the Octopress suggestion.