You can check how much people that are online in DarkOrbit by doing these following steps:
- Go to the Home Page
- Right click anywhere in the screen, select View page source
- It should open a new tab, on that tab, select "CTRL+F"
- and in the search toolbar that just popped up, put in "Ouser"
- You should see the player count from there.
This is really great when you want to bid on something at the Trade.