Just because. I did like a little bit of work for $50 (basically just a "rails new" with a theme the project owner purchased), which doesn't move the needle, so thought I'd take a few to supposedly boost my credibility. The fact that they're a waste of time doesn't change the fact that they're pushing a borderline-scammy and low-quality product within their offering.

Took a test or two because the other bidders have that to show. I assume they create a few accounts and copy over the answers. Some of the questions were so old and irrelevant I didn't even come close to what the other users scores were, so I couldn't even show it in my profile.

Completing tests and getting the accreditation greatly increases the earnings of freelancers.