Is this White hat or Black Hat

[Michael.Leonard]

Can we use Domain masking/URL masking? How google see this?

Orignal domain - http://mstylecrazy.comMasked domain - Bestupforyou.comIs this also creates duplicate content? and Is this invite google penality?

[DannyHoodless]

Yes, the problem with domain masking is that it creates duplicate content in search engines, particularly Google. Google would see the two domains serving the same content.

Search engines will identify these domains as duplicates and decide to serve one over the other; and most times it’s not always the one you want.

Can i ask the reason you are thinking about a mask?

Danny

[Carson-Ward]

Given that you're using an iframe on the link you gave, Google will just see the second domain as a type of scraper and probably disregard it. If the "best" domain is your primary domain it's probably not a big deal. The iframed site will just never rank for anything. It's not ideal, though, because any links on the second site will not help you.

Out of curiousity - why are you doing this? It's at least a strange experience for the user to see the site with a title and logo that doesn't match the domain. If it's for tracking, there has to be a better way. If it's for domain name, I think you can create a better brand and get that domain. This is partly unsolicited advice, but "bestup" doesn't really make sense to most people. You'd probably get a lot further with something like "John D. Makeup" and the matching domain (in my example johnpmakeup) won't require these strange concatenations.

[GlobeRunner]

Whenever you use domain "masking", you're setting yourself up for search engine ranking problems. You're essentially making the same content available on both domain names. That leads to duplicate content, and the search engines (mainly Google) will pick which domain they prefer and show that on in the search results (usually the one that they crawl first).

The only proper way to deal with this is to set up 301 Permanent Redirects from one domain to the other.