Lately, some of my requests to get friends (without a filter) has returned a response that assumed a filter was set. Specifically, I will see a response of "topFriends" when doing a request for 'all' friends:
/v1/users/00000000/friends.json?page=2&page_size=300&oauth_nonce=00000000000000000000000&oauth_signature_method=HMAC-SHA1&oauth_token=&oauth_timestamp=1210350161&oauth_consumer_key=http%3A%2F%2Fwww.myspace.com%2F99999999999&oauth_version=1.0&oauth_signature=aaaaaaaaaaaaaaaaaaaaa {"count":44,"topFriends":"http:\/\/api.myspace.com\/v1\/users\/999999999\/friends?list=top","user":{"image":"http:\/\/aaa","largeImage":"http:\/\/aaa","name":"aaa","uri":"http:\/\/api.myspace.com\/v1\/users\/11111111","userId":111111111,"userType":"RegularUser","webUri":"http:\/\/www.myspace.com\/aaaaaaa"}}