Cookies vs. Session
Cookies are a very useful, but an often misused tool in the website arsenal. As security has tightened due to all of the malware issues, many browsers are rejecting cookies. This may break your site, and make it unusable for potential clients. Cookies also create a serious problem for the user. If they save login or site information, that's great, but when the user clicks the button to clear cookies in the browser tools, all of that data is lost. If the user has the need to work on more than one machine, such as the office or at home, the data is not consistent.
As a site moves to integrate php into the page structure, the possibility of session management and storing of the key user information in a MySQL (or similar) database, for a more satisfying experience.
