Premium links
Premium links, can be borrowed for one time fee depending on the plan you have activated. Premium links are of the length between 1 and 5 characters and behave the same as any other link. The life time of such link is 100 days from the very last click or 200 days from the last visit of the link stats. Links created on a custom sub-domain aren't limited by length, and do not qualify as VIP links.