@RayScript
That's a pretty new thing (at least in my experience). Posts used to have pretty equal amounts of both (before the #twittermigration), but a few PSA posts have been floating around about how favourites do "nothing" and if you like a post you should boost it. So I guess that's becoming the new culture here, but I still prefer to fav for "thanks for posting this" and boost only if I think it's something that needs to be amplified.