If anyone is thinking of screenshotting their test scores please be aware. Read through this thread and notice all of the posts saying that his is a good decision and that the skills tests are worthless, because each and every person who made those posts will steal your screenshots in a heartbeat if they ge the chance, it's like a dream come true for them to be able to claim that they passed them. Don't be stupid, watermark your screenshots or better yet don't even put them in your portfolio just attach them to proposals (still watermarked - I wouldn't put it beyond any of them to post a fake job to get skills test screenshots).
Of course screenshotting them is only a temporary solution. We are going to have to buy our tests from ExpertRating and/or Brainbench. I'm sure not everyone will read this and eventually lots of these people will have stolen screenshots of skills tests.