I hadn't looked into BDO much at all ... but I did play Aion for three years. Failing armor enchantments and losing all the manastones in your armor piece because you failed socketing one (but don't worry, there's an item in the cash shop that will guarantee success!) ... NEVER AGAIN.
Flax is used to make kegs, which are needed in a lot of guild upgrades. You also need a shit ton of flax if you're going for Nightfury, the bat shoulders. As of this post one pile of flax seeds is selling for 7s13c. You need 60 piles of flax to make one empty keg and I think a guild needs 300 kegs total? Flax is so hot right now.
The streamers I watch the most frequently are sodapoppin, MonotoneTim (he plays a lot of sim games like City Skylines and Oregon Trail), MrMoonsHouse (survival games w/rp), and DreadedCone (a Dark Souls fanatic). For GW2 related streams, I watch Gladomer and WilsonStorm ... who both seem like two of the nicest dudes ever. I've been drifting through the Diablo streams since I recently got back into the game, but I haven't found anyone I want to regularly watch yet.
OBS is good, I think some really big streamers like sodapoppin use it rather than paying for Xsplit. My upload is too crappy to stream ... I have a ton of twitch accounts though, most of them with novelty names. There are also programs like TwitchAlert and SubAlert that will do popups on your screen when people follow/subscribe/donate, which are cool (and automated!) ways to show appreciation to supporters. I may or may not be a twitch junkie ...
Is there a way to better differentiate between posts, like the line between posts that comes up when it's new content? It doesn't seem like you can have the header with the username be a different color (like how it's done on FTT). To my eyes everything seems to run together in a thread.