I really didn't take much time to google if there is a thing like this for i haven't heard about it in desktop things either.
This is just a crazy idea i had on a bored saturday. It is majorly having a site that resides on no central server but works more like a P2P network where when a use posts an article, it obvious is stored on his device, and that of any users currently active, when another user logs on, he receives any new articles from other active users online else waits and recieves the article when a user that has it logs on. Something like that, it is really a vague idea i had and thought it was cool, be my guest to give me your insights about it and if something like this exists, do tell.
NOTE: i have no intensions of creating something like this as time aint my friend and have a shitty system now but do be my guest to poke my mind about this idea.