Well I was looking for a PC equivalent of a mac mini and found out about shuttle PC's, here is a picture of what I am looking at:

The specs are quite nice aswell, and I could easily run linux/windows on it, and the person is selling it for 120$!!!! Which to me seems really cheap
Here are the specs (his description):
Pentium 4 2.4 Ghz
1 Gig of DDR Memory
120 gigabytes of HArd Drive
DVD Burner ( CDRW too)
KEyboard and Mouse.
Windows XP w/ SP2
Microsoft Office XP 2002.
Airlink 802.11g wireless PCI card for wireless networking
2 usb fron 2 usb back / 2 LAN
My concerns would be:
no bluetooth but I could add a usb bluetooth receiver
I don't know exactly what size it is, It looks like it could be a 10 inch cube.
So my questions are:
Does anyone have any experience with these baby's? They seem like a great fit and somewhat of a cheaper mac mini, probably not better than a custom built install but I personally much rather have a PC I can just fit somewhere and not have to assemble everything myself.
edit: I have found a similar one and the size is: 30 x 20 x 18.5 cm (LWH) Which is pretty big compared to the mac mini which is 6.5*6.5*2 inches, but is more expensive for smaller processing power