Looking at the daily deals on Newegg and Tiger Direct, I found this at Tiger Direct and found it interesting. To me it looks as if its just some inside the case bling as for its not air tight around the components to keep out 100% of the dust. I also have some concerns whether you would maintain proper airflow around other components on the board with them all shielded from dust as well as airflow, most importantly the Voltage Regulators and Capacitor Bank around the CPU.
Personally I wouldn't get this. As for with keeping up with dust problems its best to just open up the case and blow it out with canned air once every few months to keep from collecting serious dust deposits which would blanket in the heat as well as close up heat sink airways with cooling fans etc.
What do others think about this? If anything it can make an otherwise boring looking lower cost motherboard look cool with its carbon fiber like appearance, but the money wasted in this could have been applied to a better motherboard originally which looks better and might have better features and upgrade support..
Thermal Armor, Dust Defender
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=8374068&CatId=184