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Is there a tool or resource that provides top keywords by country or language? Something like https://freekeywords.wordtracker.com/top-keywords.html

If I have a .com.br domain with all my content in Portuguese, will it make a difference if I host in the US or if I host on a server in Brazil? I thought I had the answer to this from Rand in one of his Whiteboard Fridays a while back where he said hosting in the target country would help, but the lady who did the international SEO presentation in MozCon 2011 said any SEO who says this helps doesn't know international SEO.  Can anybody point me to a case study on this? I have US and Brazilian dedicated servers but I'd prefer to get rid of the Brazil server expense.

I have a page on a client's site for testimonials (a dental practice).  The page is actually a post on a Wordpress install where customers can enter their testimonials as WP comments. In an effort to encourage more clients to give more testimonials I was considering setting up an iPad or other tablet at the receptionist's desk where patients would be able to enter their successes as comments on the page. If I made sure the patients all used unique names and emails in the Wordpress comments, would Google still see all the comments are from the same IP and view this as suspicious?

I have a site in Spanish that is hosted in Spain with a .es TLD. I already have many Spanish-language links from websites in Spain, but I obviously want more and I'm finding I might need to look beyond typical Spanish sites. In talking to some of my link builders who work on my English/American sites, they are recommending that I build links on the normal article sites, blogs and web 2.0 sites that I normally build links on but that I make all the content English and insert the anchor text in Spanish. For example, if my site were about "weightloss", my keyword would be "perder peso" (in spanish).  They are recommending that I have articles, reviews, etc written about weightloss in English with the anchor text "perder peso" worked into the English article.  Most of the sites are English sites that are hosted in the US (article sites, web 2.0 properties, etc). My question is what is the value of these links?  Does anybody have any experience with this?

I'm doing local SEO for a chiropractic clinic that has four chiropractors. On InfoUSA and therefor on CitySearch, Insiderpages, Healthgrades, etc, there are individual listings for each chiropractor with the clinic's name, address and phone number.  Google places pulls reviews from those other sites and I don't think they will make the connection on the listings. The tricky thing is that health-care review sites such as healthgrades.com have reviews for doctors and not for clinics necessarily. What's the best way to organize this?  Should I get all of these listings consolidated into one listing for the clinic in general that has the same info as the Google Places listing?  Should I get the individual chiropractor listings deleted?