I just wanted to add, that swarming is included in Gnutella since 2003 or something, and that it already achieved everything back then that the "new trackerless torrents" achieve today.
If you want easy to read information which doesn't need a coder to understand it, just have a look at Gnutella For Users: A guide to the changes in Gnutella for non-programmers.
The European Copyright directive threatens online communication in Europe.
But thanks to massive shared action earlier this year, the European parliament can still prevent the problems. For each of the articles there are proposals which fix them. The parliamentarians (MEPs) just have to vote for them. And since they are under massive pressure from large media companies, that went as far as defaming those who took action as fake people, the MEPs need to hear your voice to know that your are real.
If you care about the future of the Internet in the EU, please Call your MEPs.