I built a quick app a few years ago that helped out with this tremendously. I would feed the app a list of craigslist cities I wanted to watch, and it would grab the RSS of the web/info design section for that city. It would parse the feed and dump the jobs into a database. It would load new jobs with a cron that ran a few times a day.
The dashboard page showed a list of jobs that hadn't been acted on yet. You could easily eliminate a job with an [X] button, or move them into a "save for later" area. You'd have to act on every job, but it was quick to do so. Then the app had a built-in responder that allowed me to initiate the conversation from within in the app.
After putting this thing together, I got a total of 2 good jobs off of CL. I quit looking for freelance jobs shortly after but may start up again once I'm done with my masters.