Have a backup hard drive on your system to keep a copy of important files (pictures, etc.) on? The Windows File Replicator allows you to make changes to folders and files on one drive, and automatically replicates those changes to your backup drive.
Great Project! Almost exactly what I am looking for to replicate data files between different servers. The only drawback is that the replication is uni-directional. I need the files to be deleted from the left either once they are sent or once they are deleted from the right. I can get around this by creating two jobs, simulating bi-directional replication which works well. Rated 4 stars because of the lack of bi-directional support. Also some sort of error checking (checksum comparisons) and SFTP support would be great!