Known as the "thumbs-up smiley," it is an ascii or emoticon
similar to ^.^ b
. It is displayed with two thumbs up
as seen with the placement of the 'b' and 'd' before and after the ^.^
emoticon, respectively. Compared to the ^.^ b emoticon, the lone 'b' is switched to a 'd' and a 'b' is added to the other side to properly depict where the fist would be if one were to observe and individual put their thumbs up.
Derived from the ^.^ emoticon, it expresses similar emotions to a physical thumbs up such as approval, joy, or success.