My Powerpoints are on Slideshare

I found out about a service called Slideshare where a person can mount his/her Powerpoint presentations to allow others to use them. My 6 files are available at http://www.slideshare.net/bruceslutsky . It states how many times each Powerpoint has been viewed. I was surprised to see that my lesson on how to find information in civil and environmental engineering was viewed 46 times in 5 days, more than the chemistry related files.