Access your friend's MySpace page.
Click the “View all Blog Entries” in the blog section or click a specific blog title.
Locate the “Signup Date” on the left to get the date that the member joined MySpace.
Obtain the member's “Friend ID” by going to his MySpace page and looking at the URL in the address bar in your browser window. Copy the nine-digit code displayed after the slash in the “http://www.myspace.com/” URL. If the user has a personalized address, such as “myspace.com/personalname,” click a link on her page like “Photos” and copy the numbers after the “friendID” entry in the address bar.
Copy and paste the following URL in your address bar:
http://blogs.myspace.com/index.cfm?fuseaction=blog.ListAll&friendId=
Enter the “Friend ID” from step 1 after the last “=” symbol in the address. For instance:
http://blogs.myspace.com/index.cfm?fuseaction=blog.ListAll&friendId=123456789
View the “Signup Date” on the left side of the page to find out when the person signed up for MySpace.