Anyway, a painting-a-day blogger named Jeff Hayes best describes the concept and origins if you are interested:
Pioneered by Duane Keiser (with a special nod to Kevin Macpherson's Reflections on a Pond project), the discipline of producing one new painting every day has become a phenomenon embraced by dozens of artists worldwide. While very few of these artists produce a new painting every single day (I take weekends off, for instance), disciplined regularity is clearly the goal and essence of this practice. Typically small in format - 6"x8" or less, these paintings are offered for sale online at the artist's website or through eBay, often for starting prices of just $100. This lively niche of the arts world allows artists to experiment, develop, and just have fun outside the confines of large-format works. The collecting public is also recognizing that these often stunning little masterpieces are a tremendous way to build their art collection.