Stupid graph, that's comparing apples and oranges. Yes products are identical, but the distribution is totally different.<p>Facebook intentionally was only on college campuses. It let them scale slowly and work their way up the chain so to speak.<p>Twitter was crushed by growth and didn't have an existing user base to tap into.<p>Google+ growth is impressive, but it's built on top of how many Google Accounts, GMail accounts, Chat accounts and so on? It was designed from day 1 to get to the same 700+ million users that Facebook had.<p>I doubt either twitter or facebook ever considered the idea of getting a billion people to use them when they launched.<p>Also, even more than Buzz or Wave, Google+'s only value lies in inviting your friends. So, people invite their friends. It's like a social game, it only is fun if other people play it. It is in everybody's best interest to invite their friends, otherwise you are just sharing with Google's servers. If I wanted to work on a wave, it was with 1-5 people, if I want my social network on Google+, I'm going to invite 100+ people.<p>Apples. Oranges.
Also interesting to compare these timespans to other networks, like telephone and fax. Not sure how accurate these figures are, but for a ballpark: <a href="http://img.photobucket.com/albums/v201/kaap/fig3.gif" rel="nofollow">http://img.photobucket.com/albums/v201/kaap/fig3.gif</a>
Two weeks is how long it took for me to get as many spammy adds on Circles as I have gotten on Facebook in 6 years.<p>These stats are a complete joke. Almost any major google launch gets this type of initial surge. That google is happy to celebrate and even cite this type of stats tells me they are looking at the wrong metrics.<p>How about: how many people have given up fb for google plus?
I think the real test will be September: how many students have moved across to running their Social Networking through Plus, as opposed to Facebook or something else.<p>Once terms begins I suspect people will form around one network or another as their primary tool, so if Plus hasn't managed to get full social groups across and active by then, they may well default to Facebook as their primary social network for organising and sharing. Alternatively, I could see Hangouts managing to grow as a chat/skype substitute even if social groups were generally staying on Facebook as their Events and Sharing site.
><i>It doesn’t really require much more explaining than this</i><p>Ugh...actually it does: <a href="http://www.sdn.sap.com/irj/scn/weblogs?blog=/pub/wlg/25593" rel="nofollow">http://www.sdn.sap.com/irj/scn/weblogs?blog=/pub/wlg/25593</a>