I haven't really looked into online dating much, but mainly because I haven't been "actively" looking to date until now. It's something i'd certainly consider though. I still would like another unicorn situation (what can I say, I'm a fan of one stop shopping) but I understand how unrealistic that actually is so i' not holding my breath.
As to the single straight wallflower poly thing, you're about the exact class and speed of person i'd be looking for, but my own similar nature seems to prevent me actually meeting someone like you.
Straight poly guy in an open marriage to a very special bi poly lady. We miss our unicorn, and really need to make some better friends.