If the utility is high enough, then I might not mind. The problem is when the content's utility is insufficiently advanced and it is followed by a plug for a ve

If the utility is high enough, then I might not mind. The problem is when the content's utility is insufficiently advanced and it is followed by a plug for a very related product/service that solves the problem identified in the content. That scenario casts suspicion on the content: "Did the author write this only to plug the product/service?". In this instance, the Dropbox info was sufficiently useful (it appeared to be an original discovery) that I don't see it as a huge problem.