You can exclude things using a more complicated Java regular expression in the search function: http://sites.google.com/site/thebackupmonkey/help/ searches . Do a search based on a regular expression, and then include the search (which is saved as a location) in your backup by dragging and dropping it in.
Have a look at the comments here for an example: http://thebackupmonkey.blogspot.com/ 2009/09/using-searches-to- backup-files.html . Note that "^" is both the start of a line (at the start of a regular expression) and a negation (in the character class: http://java.sun.com/docs/books/tutorial/essential/ regex/char_classes.html ).
A simpler exclude option would be a nice feature to add! It's on the (long, growing) TODO list.
