What does additional web hosting traffic cost? Traffic (also called data transfer or throughput) is the combined size of all the files transferred from your web hosting computer to your customer's browsers. For example, a 10K html page (cloudyday.htm) that includes three 50K images (sun.gif, cloud1.gif, tres.gif) requested by 100 people generates 16 MB of traffic. The html page and the graphic files only require 160K of disk space -- but if many people visit -- they create throughput. Most professional web hosting plans offer a set amount of traffic for free (often around 100MB.) Most sites (especially those without any history) will not exceed the free traffic limits.
Web Hosting - resources

Web Hosting service - email accounts.

How many auto-responders are included? You usually have two choices for picking up email at your URL (for example yourname@yourcompany.com). You can pick them up directly (program your email software to pick up the mail at yourcomany.com -- this is called a POP account) or you can forward the mail somewhere else (for example to youraccount@mweb.com or youraccount@yahoo.com). If you have a serious business on the Web, it is an important part of your image to use your own domain name for all your mail. It simply shouts "Newbie!" (new to the Internet) if you place your Yahoo (yourname@yahoo.com) or Hotmail (yourname@hotmail.com) email address on your Web page. So, you can use yourname@yourcompany.com on your Web page -- but behind the scenes (where nobody can see) you tell your Web hosting to forward ALL your mail to where you want. And yes, that can be your Yahoo account or your M-web account. Auto-responders are a special kind of email address that automatically sends out a standard response to anyone who queries them.
Web Hosting - resources

Web Hosting FrontPage extensions support.

This is only important if you plan to use Microsoft's Front Page to create your Website. Many people do and most (but not all) Web hosting companies do support Front Page.