Joined on 12/25/05

Pros: It actually works really well. Placed this in a Supermicro 1U ATOM server and loaded Vyatta on a CF card with it.
Cons: The LED's are to bright?

Pros: It's a 1U server that takes up roughly about an Amp worth of power (at 115v)
Cons: It didn't come with a shroud for the Fan to CPU area
Overall Review: Using this to replace a ATOM processor computer that I outgrew in a Colo facility.
It works..

Pros: It's cheap and works in my rack. The 2u profile is able to house a standard power supply, plus many low profile components. The small footprint doesn't overcrowed. The system is light enough to mount on a relay rack, or by it's ears in a normal rack. I'll probably purchase another one to replace a 4U box.
Cons: As others have mentioned, I'd suggest changing the two front fans. The current stock ones produce a large amount of noise. For home users this gets annoying quickly. I'd suggest purchasing a low dBA / high CFM fan if you're NOT placing this in a data center.
Overall Review: As mentioned use a power supply with a rear fan. A Scythe "Big Shuriken" heat sink will fit in the case. The stock AMD heat sink wasn't cutting it.. I created a air tube from plastic and use one front fan to blow air in the direction of the CPU. Otherwise it'll get a bit warm in the case.
It works

Pros: It's small and fits in the machine?
Cons: It wasn't free
Overall Review: I'm currently using this in a Super Micro Atom acting as a Vyatta router. A Gig-E NIC plugs into it. I'll probably pick up another one for another machine. Use it in conjunction with a SCSI card.
Vyatta Router

Pros: It's small and only takes up a 1/2 amp in the Data Center. I honestly have light bulbs in my house that consume more power than this thing does! It's small and has enough UNF to do some tasks. I'm currently using it as a Router / VPN Server in a data center. Excellent low cost solution for a 'Soft Router' such as Vyatta / PfSense .
Cons: - It's an ATOM so don't expect to render 3d images at lightning fast speeds. - It uses Realtek RTL8111C-GR LAN cards which sadly means if you want to run ESX(i) on it you can't. - Didn't come with a PCI Riser card. - Can only rack it by its ears.
Overall Review: Installed the MAX 2 gigs of ram and a small hard drive. Trying to find the PCI riser card was interesting. I ended up buying the StarTech PCI-Express riser card from Newegg.