Happy to hear you enjoyed this. It is difficult to know everything happening on Hive, the more information one has the better. Just to make sure that you know, my list was not in any certain order of personal favoritism. I just started with the highest votes overall and worked my way down.
About BlockTrades… he has always provided a great deal of liquidity for getting in and out of HIVE/HBD. You can see his posts like these that explain in greater detail the exact work that he does (some if it is a bit technical).
Let me know if you have further questions.
Thank you very much for this excellent reply and for your availability. Now I know a little more about Blocktrades