As managing editor of The Society of the Plastics Industry Inc.'s blog is live and ready for prime time, so go take a look. It's located at plasticsindustry.blogspot.com, and it's called "In the Hopper."
Barry Eisenberg at SPI is the primary author/poster, but others (including SPI President and CEO Bill Carteaux) can and will post items.
It looks like they've been posting on a wide variety of topics during the warm-up period, including energy policy, sustainability, and some general-interest items. There's also a blog roll with links to other plastics-specifics blogs.
This should be an interesting site to watch. Welcome to blogland, SPI.