Facebook API : Show Only Posts From People Who I Want

I was wondering if this can be done or not with Facebook API :
Let's say I have a web application with 'login with Facebook' button.
When users login with their Facebook account and they become my 'circle' on my web application, even though they are not my friend on Facebook, can I still get what they post on their wall and display it on my own web application?
for example these are people who involve : Me, Mom, Dad, and Adam.
Adam is my class mate, but I haven't add him on my Facebook. So, practically, he's not my friend on Facebook.
now, if Adam login on my web application using his Facebook account, and he become my 'circle', can I see all his Facebook post? on my web application..
PS : is it possible to filter what's on Adam's wall too? for example I just want to display only posts created by Adam himself, not tags from his friends.
That's all I want to know. And could you please kindly tell me which API suit for this purpose? because I see bunch of terms on Facebook API.
Thanks!Application of Design Patterns for Legacy Code

I have been asked to put together a list of use cases where design patterns were applied to solve a particular requirement/feature in a legacy codebase. It has to be based on actual experiences that teams have faced in the maintenance and enhancement of legacy codebases of a reasonable volume which helped the solution to achieve flexibility, reusability and adaption to further changes i.e. in essence how effectively modern design or architectural patterns have been put to use to address the legacy codebase maintenance.
Can you share your experiences with an emphasis on the actual issue/requirement and how/which design patterns were used to solve it.