Filtering Seen Posts

I've been marking posts I like or at least don't have a problem with using hearts. Might there be a way to mark posts I've seen as hidden? That would let me opt for really reading through my timeline and if I really wanted the pure timeline I could turn off the filter. I would mark posts by throwing a toggle when I page past the posts, moving onto the next page marks the previous page as "seen". There are lots of other ways to do this, but having this option would make Imzy truly distinctive from Facebook and Twitter.

I'd be happy to hear other takes on this idea from anyone else. :)