First, look at the compensation plan. Can you understand it? What exactly must you do in order to be paid? Do you make retail commissions? Commissions for sponsoring new members? Residuals (overrides) on the sales volume in your organization?
Next, consider the product. Is it unique? Is it in demand? Is there value in the price? Or is it overpriced? Is it consumable? (this, of course, means repeat buyers)
Then consider the company itself. Is it a brand new start up? (could be risky) After about 3 years, the company should be in a growth phase? (is it?) After about 8-10 years, the company should be mature and stable. Do your due diligence. Go out to Google and do some research. If it's publicly traded, are there any problems out there with federal regulators? Is the stock price healthy or are financial analysts concerned?
Finally, don't forget to choose your team and your sponsor with great care. Don't overlook this last detail. No matter how talented, skilled and determined you are to succeed, a sponsor who is arrogant or unhelpful will impede your progress.
Did your potential sponsor return your phone call in a timely manner? Does he or she return emails promptly? Do you feel any kind of connection, when speaking on the phone?
Look for a sponsor who understands and teaches Internet Marketing techniques. Savvy network marketers are now leveraging the internet to locate and recruit new distributors. You want to be part of a team that is doing this correctly and teaching new members to do the same. Can they teach you how to generate free leads with social marketing? Can they show you how to set up and use an autoresponder?
Keep looking until you locate a confident, knowledgeable leader. This person will be your new coach and mentor, so make sure that you feel comfortable with the choice. A good mentor, combined with a good company will greatly increase your odds of success.