Finding a niche to specialize in, whether it is Internet marketing or scientific articles, can help you become a specialist and land more, higher-paying online jobs. Use caution when applying for online writing jobs, however because the ads can be scams. Do your due diligence and make sure the opportunity is truly legit. 

Travel Agent Jobs 

The travel industry is another vertical that attracts a lot of scams. Though you may have to sift through some online jobs that are not on the up and up and seem too good to be true, there are legitimate travel agent jobs that can be performed virtually. Even if you can't find a legitimate job in the industry, you can always start your own travel agency business from home with little startup cost. 

Tom Ogg, Founder of HomeBasedTravelAgent.com, says, "Real home-based travel agents have experienced robust growth over the last decade, and there are probably 40,000 plus of them and growing."