Sciencebase has been around a long time, fifteen years as at this almost July 2014 update. Before that it had a protoincarnation in the form of my Elemental Discoveries web pages that I first published on the web in late 1995! It’s changed and evolved. There was a time before blogs, when it was effectively a blog, it’s been a portal, a hub, a webzine etc etc. It even used to have a links directory stuffed with useful science links back in the late 1990s early 2000s. But things move on, people no longer need blogrolls, they want links to specific content on an ad hoc basis, which is where Google+, Twitter, Facebook etc all come into their own.
Moreover, I have so many sources that it would be impossible to keep the lists up to date. If you want to find out which sites I read and respect then read my blogs posts, follow me on Twitter and like the Sciencebase Facebook page, that way you will keep abreast of the things that I am keeping abreast of…as it were.