| top-level domain | end of a given web address. Like .com |
| pay per action | This function is like Pay Per Click (PPC) with the exception that publishers are paid only when the click results in an actual conversion. |
| link atrophy | the loss of backlinks to your website over time. |
| new visitor | Similar to a unique visitor, visitors in a given period that have never visited your website before. |
| gtlds | Shorthand for generic top-level domains, this is one of the categories of top-level domain in the Domain Name System that comprises of domain name extensions with three or more characters including .com, .net, .org. etc. |
