Free hosting is available, but usually comes at the expense of quality. Free web hosts often cram hundreds or thousands of websites on a single server sharing limited cpu and bandwidth which results in lower availability, slower load times and less reliability. Free image and file hosting accounts often have load limits on their free accounts and require upgrading to a paid account for better service. All three are likely to inflict banners, adwords or popups on your visitors.

• What are the limitations of the free service?
• How often will the user be nagged to upgrade their service?
• Caveats. What isn't the offer telling you that a person might want to know?
• Is their any kind of spam, popups, adwords or intermissions?
• What are performance limitations?