Comment by LeafStorm

That is one important contribution of Github, Bitbucket, Gitorious etc. to the open source world: the ability to browse a project's code instantly or near-instantly. Most SVN or CVS-based systems have an outdated, painful Web interface, buried under a thousand menus - assuming the project even sets one up to begin with. Even when you have a program installed on your computer, it's easier to browse the code on Github.