Traffic refers to the amount of visitors to a website. There are three main types of traffic: organic traffic from unpaid links, traffic packs which are purchased blocks of 50,000 hits, and sales credits given for referring new members. Traffic is tracked in a member's traffic bank and is needed to qualify new advertising panels on a site. Traffic limits decrease with each new panel but can increase from qualifying higher level panels or receiving sales credits. Traffic packs are a monthly commitment that provide targeted visitors to a member's sites.