The link diversity will be divided between 30 TLDs (Top Level Domains).
These range from: .com | .net | .org | .biz | .info | .edu | .gov | .us | .ru | .es | .fr | .en | .de | .in | .co | .co.uk | .ca | .com.us | .tv | .etc
Well... you get the point...
This creates a link diversity that shows Google, Bing, Yahoo that you are popular all over the world. If you'd like to have JUST Tier 1 countries (USA, UK, CA, AU, BR), simply send us a message and let us know, and we can let you know if there are any extra fees for this in your campaign.