> I have no way to throughly evaluate the quality of a blog

I don't like paywalls but this is very silly. You have exactly the same tools to evaluate products and blogs: reviews. You wanna figure out if you should pay for The Information? Go lookup a reddit thread on if it's worth it[1].

Also what "tactics"? Being indexed by a search engine? Nefarious!

[1] https://www.reddit.com/r/venturecapital/comments/142ulk7/the...