Wow, that's an interesting idea! It looks like you took Windows and made it part Mac.
But for now, let's just review the website, not the product. Undoubtedly the thing that annoys me the most is the Animated GIF in the top left corner. Moving objects is always what the person is drawn to first, so it makes it hard to focus on the actual content.
Fixing spelling mistakes is crucial here. If you can't speak English, neither can the product, and who knows what coding errors might be found in it if you don't notice something as simple as punctuation! Given, the video seems not to have that many spelling mistakes in it, so at least the OS works.
Maybe put an emphasis on how it's virus free... a whole Operating System can do a lot of things, and that makes me slightly cautious of it completely wrecking my machine. Also, make it clear how to revert back to normal Windows if a user does not like the OS. As foreign of a concept it may seem to you, somebody... *might* want to uninstall it (not saying that I do).
Don't use Discus before it's too late - I don't know if it's just me, but I've never had it load properly before. I don't know if it's because it's blocking me out because I'm in Canada or something, it won't load.
I love the footer!
Scary as hell!
OK - here goes with the review...
First impression... slick site with simple, open and modern design.
Nice use of the initial browser fold.
I understood the purpose of the site within a few seconds - something many sites lose sight of.
Consistent good use of meta titles.
Nice little animated gif for the logo although the actual title is small and smacks of a standard CMS option...
wb? wibiya? not familiar with this system but it seems to do a good job.
It is a fixed width design and doesn't offer progressive re-sizing options. This ain't good considering the increased use of mobile/tablet devices.
The css is a real mixed bag of differing styles - all of which seem to be copied from page to page with no common stylesheet link. This will make site-wide changes a pain.
The js rollover works well enough, although your background image has some nasty aliasing along the edges of the iphone and monitor. Have you cut these out yourself? Whatever package you're using - have you got anti-aliasing to get rid of the stepping?
You're welcome to ditch the use of meta keywords - none of the major search engines use them anymore, and Google will represent the vast proportion of organic search hits.
I note on your download page, you have more interaction from visitors - a fact not present in the discussions page. Is there any way to combine these? Or possibly make the visitor more aware of the feedback on the download page at the top of the page?
You catch my drift?
Hope this is of some use.