I've never contributed data to those groups, but I have used their data to track and observe such satellites in the past.
That article keeps talking about binoculars, but that's the hard way. You need a good telescope. If the quality of the TLE data is sufficiently high, you'll point right to the bird and track it spot on as it moves.
Edit: I've also used this method once for a site survey in placing a satellite dish. I happened to be set up in a spot where I was considering placing a dish, so I set the telescope upon the more common geosynchronous targets we typically concern ourselves with here. Of course, I wouldn't ordinarily go to so much trouble to find a satellite, it just sort of worked out that way.