I especially don't trust free shit if I don't have access and control of the future of the code. Even then it's not a sure thing.
I can't imagine a clearer example of circular reasoning.
I can lift exactly as much weight as I decide to put on the barbell.
Marketing performance is an incredibly confoundable variable.
For example, I have heard one commercial at least 5 times in the last week: advertising open positions at McDonald's. Part of that very commercial stated that, "1 in 8 people have worked at a McDonald's." I am literally one of those people! How could anyone possibly measure the effectiveness of that commercial? Is it even meant to be effective at all?
The overwhelming majority of advertising I see is from "household name brands". The notion I have heard is that the goal is not to introduce themselves to new customers, or even drive more traffic to their brand: it's to keep their status as a "household name". Do they do this because it is effective, or because they are simply big enough to afford it?
Really depends on your metrics. Very little of it builds long-term trust that didn't already exist. Much of it abuses long-term trust.
See the discussion on https://news.ycombinator.com/item?id=35590734