Bypassing VLAN security on networked switchesThere isn't much vlan info on the net in terms of specifics and I had to learn all about it because I needed to log in to a switch that was on a different vlan. With the help of the Ettercap developers NaGA and ALoR I figured it out.

Hacking

Multiple Web Technologies for dynamic php session controlThis article shows how to save and modify php session data, cookies, do anything really... without using ajax or iframes or forcing the user make a request.

PHP

HTTP Redirection Status Codes, 300Learn about the 7 different HTTP response codes specifically reserved for redirection. 301, 302, 303, 304, 305, and 307.

SEO