The most famous Classifieds site is Craigslist in the US, that provides local classifieds and forums for jobs, housing, for sale, personals, services, local community, and events.
Private Proxies are widely used for Craigslist, the proxies can be let you post tons of ads/jobs. You can register more accounts with multiple dedicated IPs.
How to Unblock Craigslist for internet marketing?
1.PVAs – Phone Verified Accounts
Craigslist（CL） always is a profitable but tough place for IMer. They are obviously very aware of many things people do. Getting ads live with PVAs(Phone Verified Accounts) becomes essential, that has been an issue more than ever in the last few months for Internet Marketing.
2. Private Proxies – GEO targeted
Use PVAs with a new GEO targeted private IP addresses provided by Craigslist proxy service that will solve the problem. So more PVAs with Private Proxies = more active account = more active Ads means more profit.
With that, you can easy to unblock Craigslist due to the IP filtering structure. BTW, Don’t spam on Craigslist and other Classified Ads websites, that’s will let the proxies get flagged immediately.