If you want to know myspace userid for developing social sites for your application
Just open your myspace page login it and go to page view source and search here
UserId or DisplayFriendId
and after that will see your userid value in numeric format.
This useful like this url:
http://api.myspace.com/v1/users/4859568/friends/activities.atom?page_size=1
&activityTypes=EventPosting&extensions=All
http://myspace.jochemschutte.nl/api/?format=rss&myspace_id=4459262
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