Use a service like Flickr to get people acquainted with your work, offering photos they can use on their website for free under the Creative Commons license. Once you’ve built up a following, join another stock photography site like Shutterstock or iStockphoto where users will pay for the opportunity to use your pictures on their blogs. You can make up to $120 off of one paid download of your photo. Even if you get compensated at a lower level, the money can really add up if you take a lot of quality photographs.
And I'm sorry, but I have to say it — don't spam your friends! It may be tempting to do because the more sponsored stuff you share, the more you can earn. But spamming your friends will backfire on you because they'll get wise to what you're doing, become annoyed, and either block or unfriend you. So do everything in moderation and try to share things you think your friends would be genuinely interested in reading.
Reddit is a social news website and forum where stories are socially curated and promoted by site members. The site is composed of hundreds of sub-communities, known as "subreddits." Each subreddit has a specific topic such as technology, politics or music. Reddit site members, also known as, "redditors," submit content which is then voted upon by other members. The goal is to send well-regarded stories to the top of the site's main thread page.
If you find you enjoy doing the yard sale thing on Facebook, you can do a brisk business in picking things up for resale. You can search through local yard sales, rummages sales, thrift stores, and similar places for valuable items you can flip for a profit online. You can also engage in retail arbitrage, finding items at retail outlets for incredibly low prices and selling them for a profit on Facebook. Leverage your timeline, Facebook groups, and Marketplace as above.
Usenet, which arrived in 1979, was beat by a precursor of the electronic bulletin board system (BBS) known as Community Memory in 1973. True electronic bulletin board systems arrived with the Computer Bulletin Board System in Chicago, which first came online on 16 February 1978. Before long, most major cities had more than one BBS running on TRS-80, Apple II, Atari, IBM PC, Commodore 64, Sinclair, and similar personal computers. The IBM PC was introduced in 1981, and subsequent models of both Mac computers and PCs were used throughout the 1980s. Multiple modems, followed by specialized telecommunication hardware, allowed many users to be online simultaneously. Compuserve, Prodigy and AOL were three of the largest BBS companies and were the first to migrate to the Internet in the 1990s. Between the mid-1980s and the mid-1990s, BBSes numbered in the tens of thousands in North America alone. Message forums (a specific structure of social media) arose with the BBS phenomenon throughout the 1980s and early 1990s. When the Internet proliferated in the mid-1990s, message forums migrated online, becoming Internet forums, primarily due to cheaper per-person access as well as the ability to handle far more people simultaneously than telco modem banks.