On the day that the internet turned 25 (The first ever internet address ending in .com was registered 25 years ago by a Massachusetts-based company called Symbolics) another very significant event was announced. According to Hitwise during the week of 7th -13th March Facebook overtook Google as the most visited website in the US with FB taking 7.97% of all traffic and Google 7.03%. This is the first time the monolith of Google has been knocked off the top since it overtook Yahoo in Feb 2008. Another report I was reading in a blog from from Nielsen throws even more significance on this as it shows that the average time spent on Facebook in January was 10% up at a whopping 7hrs 1 min 41 seconds compared to Google's 2hrs 5mins and 19 secs (second place was AOL with 2hrs 14mins). Now I am sure weveryone will say - of course at this point as people use Google as a means to and end whereas FB is used as an end in itself and Google is a $130 billion public company with a super profitable business model that makes $23 billion in annual sales and FB is still a start up by comparison but it will be interesting to see what happens next - theories here include - will Google Buzz take off and start to challenge Facebook or the privacy brigade finally manage to persuade people that the ongoing changes are compromising them and we all leave FB in our droves - or indeed a competitor such as Foursquare steals a march and pulls the rug from under FB's feet (unlikely as they seem to copy whatever anyone does) or as brands are overtaking people on FB in terms of updates and we all start using it less. Who knows all that we can predict is that the next few months cannot be predicted.