Sorry if I come across as little blunt, but just because you're an algo it doesn't mean ure a friggin' "smart money". Just as some of you already mentioned, I bet there's a lot of dumbass algos out there. All in all, this algo/quant/smart-money crap is just another fad that's created to fool the small fries. (Remember how you were s'pose to use Level 2 and Level 3 to compete with the pros? That was less than ten years ago. What the hell happened since? Well you get my point.)
I think 80 % refers to "algo to manual" and "algo to algo" volume. There is still 20% of "manual to manual" volume, which is quite big.