Using Select Classified Ad Sites For Strong Backlinks
Most online classified advertising is useless for promoting an online business. It’s often targeted at local markets in a way that won’t help a national or international promotion. Here are three great exceptions to that limitation:
1.craigslist.org (Page Rank 
2.backpage.com (Page Rank 5)
3.usfreeads.com (Page Rank 5)
All of these classified sites are frequently indexed by Google and a specific ad can appear in Google within hours (or even minutes) of being posted for the first time. Even if your particular business isn’t local to any of the cities served by a given site, you can always post a general classified ad on one of the major cities listed there. For example, the San Francisco Bay Area division of craigslist has a Page Rank of 7 and can be used for small business promotion in the http://sfbay.craigslist.org/biz/ section.
The key to using these sites successfully is to follow the rules and conditions for posting an ad. Certain types of promotion are frowned upon and users of these sites act as “moderators” who will flag an offending ad very quickly. If your ad really breaks the rules, you may be banned from posting there altogether. Play by the rules and avoid getting your ad deleted or your account blocked forever!
The last resource mentioned above, usfreeads.com, has both a free and paid membership. For about $10 US per month, you can put up an unlimited number of full-color display ads that have all the benefits of great SEO and good placement in the search engines. Free accounts are limited to one text ad at a time. The small monthly fee for this service is worth it, even if you are on a tight budget.
The power of these classified ads goes way beyond reaching those who surf these sites, looking for bargains, services and free giveaways. Their authority is very great because they are “people-driven” advertising. Unlike Yellow Pages online or business directories which solicit paying customers, these free or low cost classifieds are submitted by individuals to sell items, rent apartments or housing, advertise job openings and the like. For the marketer who follows the rules, these ads make great backlinks for your Master website and weaker Slave pages and blogs.
You can also put up an unlimited number of these listing, which will expire after a given amount of time (this differs with each website). As long as you are not putting up identical ads that all point to the same website or blog, you can get plenty of good backlinks that will boost the value of the site or blog that they point to. This is ideal for “cross-linking” your weaker pages that directly support your main page.
Make sure you follow the rules for each classified site you choose to use. Each has different terms of service and guidelines for posting ads. Don’t mix them up! What you do on one site may be banned or discouraged on another. Use them right and get great backlinks for your promotions!