2 startups is hardly enough evidence to say that's the only way of acquiring users. Besides, if the "spam" is actually helpful and appropriate, what is spam to

2 startups is hardly enough evidence to say that's the only way of acquiring users. Besides, if the "spam" is actually helpful and appropriate, what is spam to you may be a welcomed way to learn about a new product for another person. That said, never trust a marketing messaged signed by the Prince of Nigeria. ;)