Some major free software projects including gcc, VLC and KDE are now under subversion repositories. IMHO, I think screem would see its user-base grow if it added Subversion and GNU Arch. I, personally, invested quite a bit of time last year in converting all of my projects within my CVS repository into my Subversion repository to the point where I did not need my CVS repository any more. I would not like to create (downgrade to) a CVS repository for the sake of creating my website. Two features in subversion that I tend to use often include: renaming/moving a file, having the assurance that all of my commits are atomic. CVS doesn't provide good support for either of these.