"type ins" refer to a searcher actually typing the domain in to the browser/box - people think "Hey I want a domain" / type in "domain" and would end up at domain.com
Get the Idea ?
"Uniques" are total "unique" visitors to your site generally considered over a 24 hour period. Usually They/We track you're IP Address once a day - Most pay per click search engines will pay you for 1-3 clicks per unigue IP per 24hrs
Is this Helping ?