I have great success with CL. I have scratched my head a couple times when I show up to do an estimate and its a $300k house and they are using CL. Its free which is the best part. Gets your foot in the door in some neighborhoods which could lead to a lot of potential business. I picked up 1 account in a decent size neighborhood and gained 5 accounts off of 1 account. You have to make sure you do not look like some regular joe cutting grass and give a prof appearance with your ad. It can not hurt you to post.