"In the case of the Nike+iPod Sport Kit, our research shows that the wireless capabilities in this new gadget can negatively impact a consumer’s personal privacy and safety. As part of our research, we built a number of surveillance tools that malicious individuals could use to track Nike+iPod Sport Kit owners. Our tools can track Nike+iPod Sport Kit owners while they our working out, as well as when they are just casually walking around town, a parking lot, or a college campus. The tracked individuals don’t even need to have their iPods with them."

http://www.cs.washington.edu/research/systems/privacy.html

http://www.suunto.com/suunto/main/product_short.jsp?CONTENT%3C%3Ecnt_id=10134198673945490&FOLDER%3C%3Efolder_id=9852723697223649&PRODUCT%3C%3Eprd_id=845524442492074&ASSORTMENT%3C%3East_id=1408474395903593&bmUID=1162893228127&bmLocale=en_US

http://www.garmin.com/fitness/

At least then I can pick the running shoes that fit correctly than having to choose from some set selection.