Statistics from Health News Digest Article on Nanotechnology (From "Nanotechnology Forges Ahead, Despite Health and Environmental Unknowns"):

• 600 products available from stores incorporate nanotechnology.
• World Nanotechnology Market in 2007 was estimated at $50 Billion.
• Estimated 2008 sales of $150 Billion.
• National Science Foundation (NSF) predicts that the market could exceed $1 Trillion by 2015.
  

Quotes from the article:
"Upwards of 600 products on store shelves today contain them, including transparent sunscreen, lipsticks, anti-aging creams and even food products."

"Taken together, the evidence suggests considerable uncertainty about the use of nano-ingredients in consumer products. It’s just not known if they’re safe, which begs the question: Why have we gone ahead and approved them for commercial use? Indeed, we may look back at our current decade and see it, for better or worse, as a time when tiny things caused big and momentous changes in our lives. "

Source - http://www.healthnewsdigest.com/news/Environment_380/Nano.shtml