I suppose that would explain it. I can't see what Deliveroo get out of it though, and how they might expect Facebook to have a better handle on what sort of food I would order and how often as opposed to Deliveroo themselves, who know. I wonder if they have plans for service expansion into "Deliveroo but for X" and want to see what their customers are into. Or perhaps they want to see if I am two-timing them with Just Eat!

Funny, I now remember reading a post from someone claiming that if they ordered an online grocery shop off a company that was not their usual, like magic a voucher would appear from their original company. I assumed this was coincidence, but this is the exact mechanism that such a thing could happen.

Of course this could also just be a manifestation of the trend of companies desiring data for data's sake, and a load of deliveroo managers are sitting in a meeting somewhere looking at a graph showing an intersection of people who are into retro computing and also like burritos and trying to brainstorm some strategy off such trivia.