When my wife and I attended MacWorld 2008 in San Francisco, the product we were the most excited about was the Eye-Fi cards. We imagined how it could improve the experience of our family members when it came to downloading photos. We purchased 4, and smuggled them back to Canada, and gifted them to various family members. These worked pretty well, but were limited to downloads within networks you added on your computer. Upon our return to MacWorld 2010, my Eye-Fi card quit working after taking one day's worth of photos. Eye-Fi was happy to exchange it for me, no questions asked. The new card seemed like it was made out of much cheaper plastic. It worked for the rest of the trip, but I was unable to get the software to download photos wirelessly (the whole point of this unit). I think the real culprit here is the software that has to run on your computer. The feature creep seems to have turned a functional program into bloatware. My location could also be a problem, as Eye-Fi focuses on customers in the USA, and most features are disabled outside the USA. I think the addition of an SD slot on my new Apple Macbook Pro eliminates my biggest reason to use the Eye-Fi card. I always hated packing SD card readers or USB cables for cameras, now I don't have to. Perhaps Eye-Fi will fix the software problems, but for now I rate this item as a toy, not something you could rely on.