there is any exchange where I can buy Nimiq?
Nimex, TradeSatoshi, Latoken.
Browser mining is much less efficient than CPU mining, and professional miners will not choose browser mining.
Obviously.
But that's not only mining: everything in nimiq is done through a browser. To me, web mining is more something symbolic and not a reliable way to make money efficiently.
There are rumours that the Nimiq team may be behind a hack + 51% attack against Webdollar, seen as a competitor in browser mining. Of course these are only rumors, but these things are now debated in the webdollar thread.
I fully agree with Wekkel. I find this team really honest and can't imagine them ruining their image.
However, we can't prove anything, whether it's true or false.
I just had a look to the Webdollar website and Bitcointalk announcement thread. Well, I'm not sure I would trust them. The community manager is almost agressive when people criticize their project (I mean, by pointing out real problems), the website is not smooth at all... So in one word: the
opposite of Nimiq. Only good point, they didn't do an ICO, that's a good thing for them, but if they just copied the code from Nimiq... I didn't verified this, though. I don't think we should give credit to this project, and I don't think the Nimiq team would risk their reputation to ruin a project that is not going to work anyway.