Spam/sponsored content

Where does the line between spam and sponsored content go?

I'm specifically thinking about instructables like these:

They are fairly informative, but also contain advertisement for a company. Where does the line go? I see a lot of these ibles.


If you feel something is spam, please flag it and then it will be reviewed by an Instructables employee. I consider both of those spam. Use your best judgment and then we'll make the final call :)

Community Support Manager
(I think I flagged them off at about the time the author saw them.)