While reading a series of blog posts on a sub-field in TCS (theoretical CS), I came across a paper recently published by a group of students/faculty that has literally copy-pasted large sections of a blog post, and made it into a journal paper thats available online. My question(s) are about what I should do about it:
Do I point it out to the author of the blog, and leave it to him about how to handle the issue?
Contact the journal in question - but since its not my work, I'm hesitant that whether I have a case
Leave it alone, finish reading the blog posts, and add the journal to my private list of journals to completely ignore?
The third option is most hassle-free for me, but I wondered if it'd be ethical to know about plagiarism and not point it out!