The daily test counter on multiverse-75.com counts up to 10,000. As someone mentioned already, myriad is a word for 10,000. Someone on Reddit mentioned that 16 in binary is 10000. This may be a useful bit of info when the Myriad website goes live. Edit: This should go without saying, but 16 is a recurring number in this mystery.
Its all linked to 16 candles!