Spent a few days playing around but finally figured out how to add links. I've added three for your enjoyment and edification.
Wet Canvas is a huge art website. Once you get into the site, you can find a very active plein air forum under the "Artwork from Life" heading.
Then I added two blogs--I think you'll enjoy them both. Frank Edwards lives in Canada and writes "A Brush with Life". His paintings are among my favorites--full of color and great brushwork. Linda Blondheim shares not only her paintings but also words of wisdom gained from a lifetime of supporting herself and daughters by painting. She lives in Florida and our own Doug Brown had the pleasure of painting with her a couple of years ago when he was on vacation.