I think this makes a really good point. What the blog post advocates is essentially blackmail. There's a huge difference between planning for a month or two of

I think this makes a really good point. What the blog post advocates is essentially blackmail. There's a huge difference between planning for a month or two off with several months notice and simply walking in to your boss's office and telling them you'll be gone for a couple months, starting this Friday. Also, why not simply bring this up when you're being hired. I regularly take a 4-5 week vacation once every two years or so to visit in-laws in another country. I tell my employers about this up front.