Hi,
Now days Reseller web hosting business growing more and more. The advantages of Reseller hosting are numerous but what is the Downside of Reseller Hosting.

Reseller hosting offers fewer resources than a dedicated server, and thus may exceed resource constraints sooner than with a dedicated server. A Reseller hosting account can only hold so many clients before the space and bandwidth are greater than any reseller package the hosting company can provide, and it becomes more economically feasible to upgrade to a dedicated server. This requires moving clients from the reseller account to the dedicated server, which could result in downtime. In addition to the moving and expansion issues, most reseller hosting accounts offer little in terms of customization. Reseller accounts are usually set in what software is installed on the box, and the versions available. An example would be a client asking for PHP 5, when the version that’s installed on the server hosting the reseller account is PHP 4. While some hosts may be happy to upgrade and accommodate, other hosts will not be able to upgrade as quickly.