I'm one of these people. Where in the hell is Half-Life 3. My latest editorial even covers it, where the last words are "Where are you, Gordon Freeman?" We need him, and we need him now. There seems to be a push from the community, too, which is great.

A quote from the group:
The entire trilogy of episodes was supposed to be completed and released by 2007, and if Valve have decided to do other things for the time being, that is fine; all that we ask for is a basic response on the matter, and to let fans know whether or not the current story arc is scheduled to conclude at another point in time.
In addition: This message is in no way, shape or form attempting to rush the development of the Half-Life series; in fact, most members agree that Valve should take the time needed to deliver a complete and polished product.
A bunch of gamers dubbed from the "Call For Communication Steam Group" plan to play Half-Life 2 this weekend, hoping to send a message through the Steam servers to Valve itself. The group has gotten quite the amount of press, with some of the largest websites talking about it, which is bought us to this point where we at TweakTown want to join in.
If anyone is interested in not only Half-Life 3, but the state of PC gaming right now - we should get onto Half-Life 2 this weekend and show our support. Pass this news onto everyone you know, and get them involved. You don't need to finish the game, but the more people that get into Half-Life 2, the better. The bigger the message, the more chance that Valve will finally unsilence themselves and tell us something about Half-Life 3's release.