This doesn't match my experience. If a candidate advances far enough that 3-4 of us are going to spend a couple hours of our day interviewing and deliberating, we each will at least scan resume linked blogs.

Of the companies that gave me offers in the last few months, none of them even knew I had github projects until I brought it up with them during the interview process. I mention these github projects on my resume in a separate section - its not even a throwaway line.

Personally, if someone has a blog or a Github and I'm conducting an onsite interview with them, I definitely spend an hour or so going over everything.

This is very generous of you and I would appreciate it as a candidate. In my experience, almost nobody does that. I even came across companies that never looked at the portfolios that they had requested in their job ads. One of these companies even hired me! Fun times.

Interestingly, at my company it's specifically _discouraged_ to look at people's resumes before the interview to avoid any potential bias.

The ones who you want it to matter to and to work with will read it though. Think of them mentioning it as a filter in your process.