I picked up an Acer Aspire One at Christmas 2008. I thought it would replace my desktop for most uses. I belt sanded away the offensive Windows XP and installed Ubuntu. I was ready to go. Or so I thought. Now it's a little over a year later and I've spent all of about 5 hours using my AAO. Yes, I do like having a smaller, lighter machine to carry with me when I travel. But that's about the ONLY time I put up with the mere 600 pixels of vertical resolution and the idiots who design dialog boxes with the question in the top 150 pixels and the action buttons in the bottom 150 pixels of a form that is 750 pixels high. Then there's the quirks of Ubuntu. I'm almost ready to give hackintosh or even windows 7 a try after the silliness Ubuntu has put me through.
Now I'm about to get an iPad. First of all, I'm going in with my eyes open. I know it's not a macbook replacement because it's not a Macbook. Will I use it as much as I use my Macbook? I don't know. But I can say that I use my iPod Touch numerous times throughout the day a LOT more than I use my Macbook. What are obstacles to using an iPad? First, Apple needs to let 3rd party email apps onto the thing. I want thundirbird and evolution. Not the version of Apple Mail that comes with iPhone OS and not even the version that comes with OS X. I also want firefox. I don't like or use Safari except on my iPod Touch and only then because I can't run Firefox on the thing. How well Apple implements the features I need will predict how much I use the thing. But I do expect to use it more often than I use my netbook. I think it's a step up from a netbook in several important areas and if Apple is more open about the software that's allowed on the iPad, it can become more of a "primary" machine for me, especially if it allows me to screenshare into a real Mac when I want to.
I'm waiting for the "Poor Man's Imac" shots to show up about a week after launch with an iPad sitting on a wooden stand with a bluetooth keyboard and mouse in front of it. Perhaps some duct tape will be added and we'll see it on the Red Green show.