Why commercial web hosting companies offer free web hosting? I know most of them place ads on the website for free hosting. What other benefits that do not place ads gain free hosting. What I discovered was - The main thing you get is the placement of their ads on all the websites that they Is Free (income). You also get a ton of traffic to your main domain name, which is one of the main things that if you are trying to sell the site in the future. Email address of all users, any of these are sold email addresses to the list of providers. In addition to the items mentioned above, also try to update hosting accounts payment will result in residual income.