Micro-stock photography is alive and well. Fotolia tells us they have just reached their one millionth registered member and now have 5 million stock images for sale, for as little as 14 cents, and typically a dollar or two. Of those one million registered members, 860,00 are active (defined as having made at least one credit card purchase or uploaded content within the past three months). Fotolia says it is registering new members at a rate of 3,000 per day (86,800 per month)

ComScore also shows some health growth, with 2.3 million unique visitors a month (the vast majority of which are obviously not registered members). Competitor iStockphoto , which was purchased by Getty Images for $50 million in 2006, has about twice as many monthly visitors (5.2 million). But on ts Website, iStockphoto says it only has 4 million images.

Another interesting stat the company shared with me: the number of uploads is very close to the number of paid downloads. People upload 40,000 images and other content every day, and download 50,000 images a day. That download rate translates to 1.5 million paid downloads a month. Fotolia takes 20 to 50 percent of the sales price.

Next up, Fotolia will begin selling stock video (something iStockphoto has been doing for a while). Fotolia already has 20,000 videos uploaded, and plans to roll out the new category generally in March or April.