We've seen some good looking opportunities that looked real good, until, we looked at the total cost, and they were not worth the trouble. We've also seen good legitimate opportunities that the bottom fell out of, we lost $$, time, and became discouraged.
We're looking for companies that have been around for 5+ years and have a good track record. With a reasonable start-up fee, and no mandatory advertizing
Watch out for get rich Quick Schemes - many are illegal - and those that are legal often don't last very long.
WARNING!Please! Check with your business authorities before you randomly post your business, some companies have rules about this!