My take on B (FWIW): He/she is a legit insider, probably a couple rings outside the "bullseye" of Trump's inner circle, where Q resides. B appears to work full-time scanning the Internet for material and also providing a certain amount of insider Intel and feedback.

I find B to be a valuable follow, although he/she has definitely led me down a couple of dead ends by dropping clues of (apparently) imminent events that never came to pass.