General similarities:
Controlled by an elite oligarchy. However, we are extremely honest about it. Communist Russia, despite being ostensibly the people's government, was pretty much controlled by a small, elite group of elites. These men were, by definition, not aristocrats, though. Of all the similarities between Ymaryn and Uncle Joe's Russia, this is probably the closest.
Communal land. Once again, we are extremely honest about this. Even with how we distribute development for mining. For us, it is an ingrained facet of our culture. It is the way things are. People don't generally think about owning the land. Im guessing it doesn't really cross into their consciousness that their land is anything different from the state's land. They are one in the same. In communist Russia, the land had essentially been seized by the government. The people lost their land to the government. The actual workings of the system were entirely different.
Do work, get food, get house, get clothes. We do this. Russia did this. Welcome to hard core socialism.