"If you try to help and they don't want it? They don't want to farm virtual ants anyway. So they spam-flag you and you go away."
But what if they later decide they do want a virtual ant farm, but don't want to use your virtual ant-farm business because of its previous spamming? This seems like it would be hard to measure - the people who are glad to get the reminder and so re-engage with the service do so quickly, so are easy to keep track of; but how do you measure the people who would have returned to your service next month, but didn't because you annoyed them with too many emails?
You measure this by looking at your competitors. And when you're as successful as Weebly compared to theirs, it's a reasonable conclusion that the purported repercussions of this behaviour are close enough to negligible.
But what if they later decide they do want a virtual ant farm, but don't want to use your virtual ant-farm business because of its previous spamming? This seems like it would be hard to measure - the people who are glad to get the reminder and so re-engage with the service do so quickly, so are easy to keep track of; but how do you measure the people who would have returned to your service next month, but didn't because you annoyed them with too many emails?