Wondering if you can trust observationalepidemiology.blogspot.com? This is a personal blog run by two individuals — a professor and a statistician — who write about applied statistics, epidemiology, and higher education. It's hosted on Google's Blogger platform and has been around since at least 2011, according to the Wayback Machine. That kind of longevity is a good sign that the site is legitimate and not a fly-by-night operation.
For a blog, the security setup is solid: the site uses modern encryption and hasn't triggered any Google Safe Browsing warnings. It does have a lot of external scripts — common for Blogger templates with widgets — but nothing that suggests malicious injection. There's no contact page or formal privacy policy, but that's standard for a non-commercial blog that doesn't collect your data or process payments.
If you're looking for informed commentary on statistics and epidemiology, this blog seems like a credible source written by people who plainly identify themselves. There's no reason to treat it as a scam. Just keep in mind it's a personal opinion blog, not a formal publication. That's the right context for reading it.