A popular method of communicating to fellow team members that you committed data to a subversion repository is to send an automatic email out to all users of that repository. I developed a simple two-script method that is extensible and easy to implement.
First, somewhere relevant to your repositories make a “scripts” folder. This is generally where I store all my svn-pre/post scripts. I put mine in /srv/svn/scripts (my other repositories are in /srv/svn). In this new folder create a new file called svn_email_commit.sh with the following contents.
Then navigate to your repository root and go into the hooks folder. In there, create a file called post-commit with the following contents…
And that's it! 
Don't forget to chmod +x both of the files above though. Now every time someone commits if they are in the SENDTO field of the post-commit script, they'll get emailed!
The reason I do this in two scripts instead of one is so for each of my repositories I can specify different emails. This helps in a server environment with many repositories with different projects and varying team members, clients or contractors working on the project.
NOTE: You need to put this post-commit file into the hooks folder of each repository that you want emails from.
If you have any problems, please don't hesitate to leave some comments and I'll make edits where necessary. This above works perfectly (with the right software installed) on Ubuntu, Gentoo, and CentOS.
Cheers!