Client-side scraping to extract the signal from the noise on commonly used sites. I've seen older (yet still updated) implementations/portals, but I'm surprise

Client-side scraping to extract the signal from the noise on commonly used sites. I've seen older (yet still updated) implementations/portals, but I'm surprised nobody has made federating site scripts easy for client-side use to expose as pseudo localhost site APIs and a portal that resembles Craigslist to bring all of the data together. Again, this has obviously been half done, but it's not packaged for mass appeal ala popcorn time for general web info.