It's most popular because it's the oldest,most trusted Dice betting site on the forum.Another reason is the admin of the site-Stunna is trusted person on this forum because his trust says it all.The site has paid big amount of bitcoins to the winners on time.I think these facts are enough to make Primedice most popular.
Was Stunna previously highly trusted, or did he become as trusted as he is now solely from being an admin of PrimeDice?
I've looked at some recent gambling videos of primedice, and I honestly have to say that PrimeDice 3 looks
very nice.