Cheap, works great, doesn't degrade the signal, a good solution to some common problems.
PROS: This inexpensive adapter allowed me to convert an expensive DVI cord to HDMI, allowing the use another much-needed HD digital input to my TV.
CONS: Through no fault of the converter, DVI cables and connectors are larger, and heavier, than HDMI. This means that to maintain a secure connection, you may have to prop up your DVI cable on something, like the shelf the connected unit sits on, to take some of the weight off of the connection.
Works great and comes at a terrific price. Most other people sells these in the $20-$30 range. It's a well put together product - not a cheap piece of plastic. Like the description says it's DVI-D, so you can only attach a true digital device to it unlike a DVI-I plug. So you couldn't use this in conjunction with a DVI male to 15 pin female adapter to get 2 VGA monitors working on your computer.
PROS: Price, quality
CONS: On the Dell computers we install these in (and I assume other brands would be similar) the HDMI port is very close to the VGA port. We use these for dual monitors so we need something plugged into both. These adapters crowd the VGA plug so we have to remove the screw on the VGA connector closest to the HDMI to make them both fit nicely.