Basically, he birthed every hot concept The Pack came up with. After they got dropped, he started making a lot of mixtapes with some semi serious material but no one listened (songs like I am the Hood, Myspace, etc are on those early mixtapes.) Shortly after that he got the idea to simply make as much music as possible and flood Myspace. He had over 300 Myspace pages with at least 5 songs each. 
He also low key created the concept behind Pink Dolphin. "Came up out the water like a pretty ass dolphin."
I could go on and on, but Brandon is a modern day genius. A LOT of artists watch his moves. There is no coincidence that "whoo whoo" and "swag" are now used by EVERY mainstream rapper, and that EVERY mainstream rapper uses nonsequiter rhymes and pop culture song titles (Ocho Cinco anyone?)
to the Based Gawd Young Brandon

He also low key created the concept behind Pink Dolphin. "Came up out the water like a pretty ass dolphin."
but alot of these new artists are lowkey his sons
I could go on and on, but Brandon is a modern day genius. A LOT of artists watch his moves. There is no coincidence that "whoo whoo" and "swag" are now used by EVERY mainstream rapper, and that EVERY mainstream rapper uses nonsequiter rhymes and pop culture song titles (Ocho Cinco anyone?)
to the Based Gawd Young Brandon

lil B is one of the top 5 most influential rappers in the past 5 years.
nobody knew about lil b until a couple of years ago when hipsters and cacs thought it would be funny to dikkride this troll. nikka nobody knew who he was even when vans came out. Maybe some of those westcoast fakkits were fukkin with him but I wouldnt know bout that
you fukking mong
at the dude who sacrificed his girlfriend to the based god 
if you didnt know who lil b was cause you a fukkin square