Pros: Easy to use.

Cons: Network setup on a secured router can be tricky.

Pros: Easy setup.
Reliable.
Works great with a Nikon.

Cons: Do not delete pictures already transferred, to free up space.

Pros: None that I have found

Cons: No web sharing like the 4GB. Teach me to dig around on the eye-fi site before I buy a useless $50 SD card. I really wanted the web sharing. Now I have to use the lesser of my 2 cameras.

Other Thoughts: For only $20 and half the space they should have the same features.

Pros: it says on the box! great product won awards at CES I believe.

Cons: Netowrk setup with MAC filtering can be a bit tricky.

Pros: First of all, this just works. I have it set to copy pictures to a network drive (mapped as a local on the PC running the Eye-Fi client software). Also, it copies each picture to my Gallery 2 website.

Cons: Not a con so much, but I have my digital SLR set to turn itself off after a minute or two. If I've been out of range of my wi-fi and taken alot of pictures, that's not enough time to upload everything. The solution is I have to urn my camera on every couple of minutes until everything uploads. Alternately, I could just pop the SD card into my laptop, but that's then what's the point of this automagic device?

Other Thoughts: The SD card has a copy of the client software loaded, which makes it easy to load the software. For example, I've uploaded it onto my father-in-law's PC so that when I'm visiting my pictures are loaded onto my website.

Pros: Super simple to setup and use. Just plug it in and install the software right from the card. It automatically updated and installation was quick. Setup took two minutes tops. It works great. If your computer isn't on when you go to upload pictures you can enable "relay" where it uploads to the Eye-Fi server and transfers to your computer when you turn it on. So awesome.

Cons: None.

Other Thoughts: In my situation this thing is just great. My boss is constantly using the camera to go take site pictures, and he usually hands us his camera and USB cable to pull just one or two pictures off the camera. Now all he has to do is come back to the shop and turn the camera on and they automatically upload to our server so anyone here can access them without having to have the camera and cable. Thank you Newegg, I told you I would buy one when you started carrying them. =)