Deleting and then reposting will not put your ad on today's list if the original ad was posted just a few days ago. Do set up an account and make a new ad by copying and pasting the contents of the original ad and making a new title. For example the ad 2 days ago might have read "Frans Professional Tree Service" and today's ad "Tree Service by Certified Arborist". If the title of the new ad is almost the same, CL will often times reject it. I advertise on CL quite a bit for tree work. Don't get hardly any calls from it, but it is free and I have picked up a few jobs all around the $1K amount.