I got my Dell Inspiron Mini 10" right before Christmas a year ago. I love it. It certainly doesn't replace my desktop, but for just sitting in front of the TV and surfing the 'net, it works great.
I'm sure every netbook has its drawbacks. For my Dell, the major one is its touchpad. I never could get the hang of it. I bought a wireless mouse (Microsoft Wireless Mobile Mouse 4000) and haven't missed the touchpad at all. I'm also more of a keyboard person than a mouse person, so I like to use PageUp and PageDown. You have to press a function key with your left hand and then the arrow keys with your right hand to do a page up or down. But I suppose that's common with netbooks. A minor complaint.
Otherwise I love my netbook. The keyboard has a real nice feel and the monitor is crisp.
Do you any specific questions re the Dell mini?