I know that this subject has been touched on alot in the past, and many great suggestions have been made, but I'm not sure how much attention it has gotten by the "powers that be".
Those who frequent the projects will know that I often leave my blockmaker sitting there unsupervised with a note telling people to feel free to use it, but to please leave it there. Up until now, it has a been a great source of pride for me in the Glitch community that everyone has respected that. Today I had a blockmaker stolen from under my nose while I watched. I saw it happening, and asked the person to stop--they paused, but then continued when they realized I was blaming the person standing in front of the blockmaker (who was innocent), and that they had complete anonymity because there was no way for anyone to know who was doing it. This is the last time I will ever leave a blockmaker at a project--from now on I'll selfishly go home and make them by myself then teleport back to the project to donate them. I highly recommend others do the same--this will only get worse as more people join the game.
OR: something can be done about this. I doubt the devs want these feeling of animosity to flourish: all this is doing is turning machine rooms into ghost towns and ruining the sense of communal sharing between players. A multiplayer game should be encouraging cooperation, not discouraging it because people are afraid to get hurt. I recommend the following easy solutions:
1) Make it so only the builder of a blockmaker can disassemble it. If abandoned blockmakers are a concern, make it so they decay after a reasonable time period: perhaps after 1 day they disintegrate into their individual parts, which anyone can pick up.
2) Prevent anonymous blockmaker stealing: make the one disassembling it move to stand in front of it for all to see (perhaps with the "disassembling" notice appearing over their heads). Moving slightly next to it isn't good enough: at projects, everyone is standing next to the blockmaker. Of course, if #1 is implemented, this won't be necessary.
3) Make it an option of the builder to "lock down" a blockmaker for a certain period of time (an hour or whatever). Once the lock down is expired, anyone can disassemble it, but the builder will get a warning that the lock down is about to expire before hand.
4) Machine rooms are utterly worthless if everyone is afraid to leave a blockmaker there. Right now they are just useless eye-sores. Lock down all blockmakers placed there (at least for a few days or something, I don't know), or just get rid of them. There is no point to them right now.