Social networking sites such as Twitter, Facebook, and LinkedIn can be used to advertise for free on the Internet. In addition, a variety of free blogs, forums and communities are great for promoting businesses.
Most banner ads and other methods of online advertising cost money. However, there are plenty of free options available. Many small businesses use websites like Facebook and Twitter to build communities of loyal customers, grow interest in their businesses and send promotional messages. Blogs can also be kept on websites such as wordpress.org or tumblr.com to help build a following.
In addition, free classified websites such as craigslist.org are helpful ways to place advertisements. Network on local community websites and forums to help spread the word about a new business.