In the old days of link building Google pretty much ranked sites that built large enough link profiles with enough percentage of relevant links higher than those without. Today the world of SEO if vastly different. In comes of Link Velocity. Google is interested in continued interest. Sitting on your sites laurels after building a bunch of links won’t do it…you need fuel and link velocity you have that fuel. The more one adds increasing amounts of links to their site over a specific period of time tells Google there is active interest for your site. We saw this earlier in the year with the “Twitter Fall” when Google admitted using Twitter and Social Signals to see if there was constant interest in a particular story or site. Link Velocity is the search version of social signals.
So How is It Done?
The main thing to watch out for is a to not burn out too fast. If you get tons of links to your site in the first few days, it is not only spammy, but it will reduce the the amount of links you will get as you go along. Spacing out links and increasing the amount you get throughout a number of days and per day will signal to Google that you are in fact “taking off.” I always like building rather “noising links” like bookmarks and directories in the beginning and adding more important links as I go.
As more and more SEO’s try to game the system, Link Velocity and other specifying factors will be of more importance.