It's free to become a Hostgator affiliate, and their tiered payouts are substantial — you can make $65 per signup if you provide Hostgator with 1-5 signups per month, and up to $125 per signup if you provide Hostgator with over 21 signups. You can either embed tracking links on your site or create a custom coupon code. Since Hostgator provides a 45 day money-back gurantee, it's low-risk for your website visitors to try it out.
There are a lot of items that can be purchased very inexpensively at garage sales or thrift stores and sold for higher prices elsewhere. A few years ago I discovered that I could purchase good hardcover books at my local thrift shop for $1 or less. I realized that some of them could be sold on Amazon.com for $15-$20, which turns out to be a pretty decent profit.
Pitches to be your own boss. Our Consumer Action Center is hearing from a lot of callers who go to help-wanted sites, find an opportunity that looks good and then contact the supposed employer. It turns out to be a pitch for owning your own business, with promises of huge money. Unfortunately, the only ones making money are the people pushing startup kits for a fee.