Collaborating with LaTeX and git
sharelatex.com
sharelatex.com
Here's a StackExchange thread discussing possible solutions for finer-grained patching: http://stackoverflow.com/questions/5587626/git-merging-withi...
I really like latexdiff[1] and a script[2] for making it easier to use with git. The generated pdfs have new text underlined with blue wavy lines and removed text struck through with red lines.
It doesn't properly show bibliography changes when using bibtex, but that's understandable.
[1] http://www.ctan.org/tex-archive/support/latexdiff/ [2] http://eothred.wordpress.com/2010/11/07/latexdiff-and-git/
Thanks for posting, I'm in the middle of developing a course for academics about LaTeX, git and collaboration. Perfect hit.