Some web hosts promise "unlimited transfer". This may sound tempting, but it likely means the company is not being honest. They simply would not be able to afford to do this for real.
Check the fine print of the agreement, and you'll likely find a limit there. Typically with these companies, if you hit that limit (or even a limit not mentioned anywhere), they will turn off your account.
It is safer to just stick with a web hosting company that is honest and up front with the limit, and who will provide extra bandwidth for a nominal fee if you happen to go over the limits of the hosting plan.
In addition, most web hosts offer generous allotments of bandwidth, that are far more than needed by most web sites. Therefore, even f your site is moderately popular you should be able to find a cheap web host (by looking at our comparison chart) that gives you all the bandwidth you need without a surcharge.
If you are now ready to choose a web host, go to our Web Hosting Comparison to find a web host that fits your needs. Otherwise, browse the other sections of our web hosting FAQ to learn more about hosting:
If you want to learn more of the basics about hosting in addition to what was covered in our web hosting FAQ, please see our guide on how to Choose a Web Host.