Ali, I have some experience in the process of doing the filtering you are mentioning as I write a blog on compressed sensing ( http://nuit-blanche.blogspot.com/ ), a field that spans a wide range of communities that are, often, not talking to each other nor have the same culture. I don't think Mendeley or any RSS feed services help much as they both target the same dead tree people who are generally about two years b…
That would be VERY interesting (and - dare I say it - probably impossible)