@stanrobinson Yes it is. You’re trying to present a professional image as someone who makes their living charging thousands of dollars to Very Important People. 

You’ll hurt that image if you have ads that will net you tens of dollars from Google. 

Your blog will look like a commercialized site, and not the site of someone who is confident enough to charge thousands of dollars.

@stanrobinson I try a bit of both.  I have a blog where the main focus is content, but I also have a “Hire Me” page.  On the blog, I have affiliate links, advertisements, etc.  I also have a separate domain for my freelance writing portfolio, and that site has no affiliate links, ads, sponsors, etc.  I would say if your building a website / blog for a company though, you probably wouldn’t want any of the affiliate, ads, or sponsor links.  Mainly because your main goal will be to keep people on your site, not steer them away from it.