Smoke started three months ago! and I didn't get you? dip in engagement of what?(smoke or steem?) Steemit stabbed itself the moment bidbots arrived. Right now smoke.io is very new and has eliminated most of the failures of steemit. In smoke, there is no delegations, no SBD , and 50/50 curation. And as of now, people with high stakes are focused on niche topic(Cannabis) and are doing a good job in manual curation. We wouldn't want bid bots on smoke.io , but we definitely need awesome tools like steemnow.com