One way to keep a link at the top is to ensure that when profiles are filled out that they are done to the max. That may involve adding more than one picture and adding detailed information about the user. This information may also include the address, phone number and city of location. This can help a profile become registered as being real, it may also allow it to come up as one of the top sites in a search. It is important to always keep checking back with the site. That can allow the user to not get kicked off of the site. If someone creates a profile and then never clicks back on it again, it will get wiped out and go extinct. Users may also see that the last time it was checked was a long time ago.
On a profile page, it may also be crucial to ensure that the spelling of the URL is correct. If there is an error, even a small one, it will come up as spam. The site will not recognize it or the profile. It could be regarded as simply spam. On each page, the user may not want to add more than one link on a page. That could cause the information overload to cause search engines to pass it up. The site could get recognized or labeled as spam. That may not be the intention of the person placing the profile on the social site in the first place.