Thank you Joel for your valuable input.
I managed to use OpenSocial to retrieve list of my friends and their activity list. I can now filter the activity list and get event postings. As this activity include, event title, time, location an link to the event page, I think that will be enough for me. Users may visit Event page on myspace using the link I got from the activity post.
I have another issue now. For my PHP application to get data from myspace, I have to login first. Is it possible to give enough permission to the MyspaceID application so that I could retrieve the activity list in backend? Do you understand what I mean? Or do you want me to explain in detail?
Eagerly waiting for your reply