I don't have this but I did buy the standard Flip Mino from Woot last year. Despite VERY light use (used < 20 times), the thing died last month for no apparent reason. The LED still lights when plugged into the USB port, but I can't access the files but the battery no longer charges.
My general impression of the Flips is that they're okay. The "flip" USB connector is a joke. It's fragile and you'd need clearance near the USB port. If the USB arm breaks, you're screwed. A nice old fashion USB port and cord are more practical; replacement cords are <$1 on eBsy. A much better idea than the Flip arm is used by Creative. It has a stretchy USB cord stored inside the camera.
Again, I don't have the MinoHD, but the regular Mino was too simple for my taste. There were no features at all. For example, during recording, you can't even pause. That results in many many small video clips. And playback is similarly inflexible, i.e. you can't vary the playback speed. The Kodak HD models offer much more flexibility, with multiple playback speeds and they can be found for about $49. After owning the Kodak i6 (HD, up to 60fps $69 from Woot) and Flip Mino (standard def) rsimultaneously, I'd have to say the I much preferred the Kodak although the Mino was smaller and more attractive.
I don't know what new features they placed in the MinoHD besides upping the resolution, but the Woot description is disappointing. Yoiu still have the fragile Flip arm that I hate so much, and it still doesn't have expandable memory. That means having to plug in the Flip every time you need to clear the memory. With the Kodak, I merely had to change SD cards. And I could easily give videos to friends by giving them the SD card. Worse, it means having to take your laptop on vacation.
Also there ia no still photo mode, which comes in VERY handy. I've used my Kodak to capture documents in a pinch, and then immediately emailed the document to colleagues. Not perfect, but it worked. And I can easily plug the cards into a printer (at home or the local drug store) to print photos on the fly. No such luck with the Flip. You can only create stills by performing screen captures of the videos on your computer. Very cumbersome and the quality is poor.
People considering this look at the Kodaks and compare. I believe the Kodak Zx1 is currently on sale for $47 on eCost. It uses SDHC cards, has a still mode, multiple video modes (VGA, 720p at 30fps, 720p at 60fps), multiple playback modes, HDMI output and the ability to use standard or rechargeable AA batteries (which makes it bulkier but great for emergencies. No need to keep it charged).