Hacker News Reader

I appreciate your support, but minimaxir is actually right. This was news to me, and I've been a member of Hacker News for 2768 days. It's in the FAQ, not the guidelines, which is why I missed it:

https://news.ycombinator.com/newsfaq.html

I've deleted the offending tweet and won't do it again.

Upvotes determine ranking on the front page and consequently exposure. The OP has a direct financial incentive from benefiting from this exposure, so yes, it is a problem.

If everyone asked for upvotes based on merit, the system would break down.

For most things, I'd agree but I also feel like OP has given a lot to the community and it's not like you HAVE to buy the book, it's freely available too.

Oh, it's only ok when it's people you like.