Are Best + Keyword domain names still valuable?
			 
			 
			
		
		
		
		I have a "best + premium keyword" domain name that I'm developing. It's in a niche that is exploding in popularity. 
 
My question is do such names still have SEO value, or does Google (especially) and the others give "Best" domain names a spam penalization right off the bat? 
 
I'm thinking of spending a lot of time and money (purchasing back links) on it, but wondering if I would be better off doing it for another domain name. 
 
It is already getting a little search traffic, including Google, just from linking to it from a handful of my other sites. 
 
When I type in "best porn sites" to Google, I see that toppornsites.com is number 1, and bestpornsites.co.uk is also on the front page, so it can be done. But I assume those sites have spent a fortune acquiring hundreds of good backlinks. 
		
	
		
		
		
		
		
	
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