Consider this Situation: 1) Consider one language box (that lets you select your desired language) is available on each of product page of my site. 2) This box has different language flags with their linked with dedicated domains say say xyz.com, xyz.uk, xyz.dk, xyz.us. Each domain contains content as per their country language european, german, french etc. 3) Now when you click any of flags you will get same product information, in language of the domain you clicked. My reason for this kind of linking is to get relavent back-links from all linked domains: Now My Question is: Will this structure help to get boost in ranking for product pages? Or is there any chance that it will give negative impact on ranking?