It may sound nice in theory but never works in practice. I've been doing Salesforce administration/development for about 5 years. They almost invented badge system followed by certification. On their trailhead platform,there are so many of those that it could take a couple of years to complete. They also have about 25 different certificates, varying from junior admin all the way to architect level. There are so many people out there who have 10-15 certs without even seeing the platform properly because they meemorised mock tests and etc. That's why interviewers rarely rely on certification and they are usually no more than a box ticking exercise.

Edit: Even though I'm sceptical about certificate value in recruitment process,I strongly recommend spending some time poking around Salesforce Trailhead website. They are pushing it very heavily, most collateral is very slick, a lot of PR explaining that people can go out and learn how to use it. Recently Microsoft started offering very similar platform by copying most of it. It's an excellent example how company attracts people to learn, as opposed to something like SAP,where you can't learn shit without having it at work.

I don't care if you followed a two month course by Joel Grus on Fizzbuzz and graduated magna cum laude. I care if you can actually code Fizzbuzz.

Coursera courses on your resume, is like listing your Microsoft Office skills. It would be noteworthy, if for some reason, you can't find your way around MS Office, or can't pick it up in a weekend.

LinkedIn already bought Lynda.com to create LinkedIn Learning. They've got no incentive to work with a competitor.