Yes,you can find out the date of joining by going here " whendidyoujointwitter "
I searched in google and found this one now!
Hi dear guys,
is there any possibility to see the joining date of a twitter account? Just for checking how many days it has taken get the number of followers they have right now.
is there any tools for finding out this? If you know something about this please do share.
Does somebody know where they get that info from? I can't find it on Twitter so it's strange they can display it
It gets the information using twitter's api. You can view it your self by checking out the following url and putting your twitter username instead :
For example going to Will's ProxyBlast twitter usernameCode:http://twitter.com/users/show.xml?screen_name=username
Now find the first <created_at> section and that will be the sign up date.Code:http://twitter.com/users/show.xml?screen_name=proxyblast
In proxyblast's case that is Tue Apr 28 06:07:45 +0000 2009