Both from John Scalzi's Whatever blog.
The first is a salutary warning on the misuse of social media where a writer mistakes spamming for promotion. Neither the post nor the comments are very forgiving of the unnamed offender.
The second is something quite different. In 2011 Tobias S. Buckell did a Kickstarter for his novel The Apocalypse Ocean and Scalzi's post directs us to Buckell's very interesting summary post on what was involved and how he feels about the process. It's very enlightening.