I don't know why this doesn't have a thread already....
Greg, (yes, our Greg) came to the attention of the editors of One Piece back in 2010 when he went onto a special One Piece themed episode of 'Hoko Tate' ほこたて, where he and several other super fans faced off against all of One Piece's former editors... and he got onto it two years in a row. (Hey! Spring of Trivia! [http://onepiecepodcast.com/2014/12/0...rre-adventure/)
Things escalated from there where he was pretty much declared a number one super fan... to the point he was given a magazine column about OP in 2013. He covers both the manga and anime, that picks up on little details and insights that might have otherwise been missed. It's a bit like SBS but from a fan's perspective, complete with speculation!
Greg's column is serialized in the monthly magazine " V jump", but it also appears online every two weeks, in both Japanese and English. (Just go into the article and hit the tag in the top right to switch to English. The first year or so of articles aren't in English however.)
Discuss the random little tidbits here. (Since it'll generally come out after chapter discussion has closed on a given chapter.)
The latest column just came out covering chapters 802 and 803, and has some really good stuff in it that I don't recall seeing any one else catch or think of.