I'm a writer and I make $500 to $1,200 a month working the same 3-5 hours a day or 20 hours a MONTH that work kampers do. I set my own schedule, get paid monthly, (or daily or weekly if I write for Elance.com) write as much or as little as I like and can pay for my camping ANYWHERE, without having to rely on finding a work kamp location where I want to go. You can too, and without paying anything for the information. You don't even have to be a fantastic writer.
To begin with, check out Squidoo.com. It's a site where you simply write about what you like or know about anything! Free to join, free to post and free to write. You get paid based on the number of "lenses" or pages you post. It takes about 6 months to build up to a good income, but the more you write, the more you make.
Having a blog and doing "affiliate marketing," meaning posting stuff other people sell on your website can make you money too. You don't have to sell anything. Just post it on your blog. For instance, if you blog about boats and you post a heater or other gear that people would buy anyway on your blog, when they click on it and buy it from the source, you get a percentage of the sale without doing anything else. It's automated.
Lots of people do online consulting too.
Skype, for instance, is a FREE internet phone application. You download it free and can call anyone anywhere in the world free if they have Skype (free) too. Or you can pay $3.95 to $7.95 a month for a landline calling privelege. But - they have a function where they allow you to accept calls and they bill the calling party for the time spent on the call. For instance, if you offer computer troubleshooting advice and someone calls you, they must enter their credit card number to connect, then Skype charges them whatever rate you set, like $1 or 50 cents a minute....as long as you're connected. If you do business, repair, troubleshooting, counseling etc. you can charge by phone and get paid without worry.
There are lots of ways to make money online and avoid scams. There are a lot of legitimate websites and jobs - like Virtual Assistants - where you do administrative work for someone in another state, and work from your home or RV. The social community for that is
http://findvirtual.ning.com/ it's a ning social media site like this one.
Sorry for the long post, but hope it helps someone!