First of all, be aware that this scanner comes uncharged, and the quick start manual warns you to completely charge it before using it. I charged it for 3-4 hours on a macbook pro connected to the wall and it wasn't fully charged. I'm not sure how long it takes the first time. [UPDATE] Doxie clarified below that it typically takes 2 hours for subsequent full charges.
Reading through the quick start guide, I was surprised to see the note that you should unplug the scanner from your computer otherwise it will disconnect/reconnect each time you scan. Uh oh. I realize that this is a mobile scanner, but I bought it incorrectly assuming that it could also perform frustration free as a desktop scanner. You either leave the scanner unplugged and scan a bunch of documents and then connect and import to see if they all look OK, or you deal with the OS X error message each time you scan a document. Doxie pointed out below, that when you close the Doxie software, it automatically disconnects the scanner. If I had realized this, I would have found it less frustrating. It will still give you the error if you leave the software and scanner on when the scanner turns off from inactivity after several minutes though. Maybe that issue, as well as the scanner connecting (software) automatically after scanning a page when connected (physically) to a computer could be changed with a firmware/software update.
Doxie's branding: Ok, so the scanner has the doxie logo on it, and the i's dot is a heart. I could live with that. Ok, the Doxie import software's icon is a pink heart. Hmm, I don't care for that at all, but luckily you can change the icon of an application pretty easily in OS X. Ok, when you're importing images, Doxie's cheesy character which is just the scanner with arms and legs (and what looks like patent leather platform boots, see the bottom of their website) pops up. Too much. Can you stop jamming your branding down your customer's throats when you have such an asinine 14-year-old-girl-designed brand image?
It isn't as seamlessly integrated into Mariner's Paperless, a receipt database package for OS X as the Fuji Scansnap scanners. This doesn't seem like it's entirely Doxie's fault since a) the scanner acts as a camera due to it's unique complete mobility and b) Mariner gives the impression they have some exclusive business deal with Fuji. I do think it's important to work well with it, so I'll set it up in Paperless and update this review (Fuji Scansnap S1100+Paperless vs. Doxie Go+Paperless). I personally think Doxie Go would be a much better product if they developed their own software for receipt/business record storing, or partnered with an existing one. Neat receipts seems to have a large market share that they don't deserve, based on their horrible reputation for their Mac versions.
I decided to use the scanner to scan some receipts and documents soI could comment on the performance. It scanned a few full pages (8.5x11) in low (300dpi versus 600dpi) and then slowed down and then eventually stopped. I restarted and it continued fine after that. Some of the pages were warped at the top, because some of the full size pages would be pulled in crooked and I'd have to pull one side or the other. I was using the guide mechanism set to the size of the page. I'll admit that I haven't used any other scanner of this form factor yet to compare, and it's possible this is a slightly defective unit. It did work very well with small and crinkled receipts if you take a little bit of care when inserting them, which is something that other scanners like Neat receipt scanners ironically fail at according to some Amazon reviews.
So, just be aware of the intended purpose of this scanner and that it is not really meant to double as an always (or most of the time) connected desk scanner. For me it comes down to not being able to hook it up to my computer and use it as a traditional scanner (i.e. scan a page, see the result on screen, rescan if it doesn't look good, and repeat for other documents). I can't really hold the fact that I misunderstood the "single-mode-operation" of the scanner against it. I'd give it 4 stars despite it not being what I was looking for, if it weren't for the issues I had with paper feeds and the gender specific branding that doesn't end at their website. When more people have written reviews it should be clear whether my feed issues are an isolated case of user error or defect, or not.