I'm building a website that will have a news feed (similar in idea to facebook and twitter) ...
Other sections in the website will also be using the same idea.
I've already build the DB and working on the HTML/PHPs with my team. I need to know how to create a news feed which is scrollable like facebook. Don't need to set a limit to it.
UPDATE
After further searching, I found that what I need is news ticker ...
You should consider Feed Creator.
It'll do everything you want without reinventing the wheel.