Get unblocked from Craigslist to begin using the online classifieds service again as you did before you got blocked. Although it isn't possible to reinstate a previously blocked account, it is possible to create a new one to begin using the site again as you did before the block. Once you've returned to Craigslist, avoid engaging in the conduct that got you blocked in the first place to prevent it from happening again.
Navigate to Craigslist and choose the "My Account" screen. If you have been IP blocked from Craigslist, visit a web proxy -- "China Proxy" and "Free Proxy" are two free examples -- type "craigslist.org" into the field and press "Enter" to view the site via a Web proxy, a website that conceals your actual IP address when visiting websites.
Select "Sign Up for An Account." Enter an email address other than the one that's been blocked. Input the image sequence, and click "Create Account."
Check your email. Click the link embedded in the email Craigslist sends you to activate your new account. You are now able to post to Classifieds using the account.
If you access Craigslist using a proxy, don't even close the top navigation frame that appears when you use Craigslist via the proxy. Otherwise, Craigslist's server sees your true IP address, and the block re-commences.