You can create links by adding rel="nofollow" tag, which is not searched by search engines. You also should add nofollow tag to the links, you think it doesn't need it.
The links on the other websites are called external link.
Each computer has to have an IP number to connect with other computers. On the off chance that you have site that have high fame, both you are gone to by more guest and you pick up high benefit on promotions that you show.
Alexa rank is a scoring framework that measuring an activity and making characterization as per this movement those Alexa Toolbar clients are going to sites.