I love the way some people act surprised by "leech" behavior in open source:

"Leeches" -- that's how Dave Rosenberg, co-founder and former CEO of MuleSource, and now part of the founding team of RiverMuse, refers to companies that use open source technology but don't give back to the open source community. Companies like Southwest Airlines, with a reservation system largely powered by MuleSource. Companies like Cisco's Linksys subsidiary, whose routers rely on Linux. Companies like Amazon.com, whose Elastic Cloud Computing (EC2) service depends on Eclipse Foundation's open source offerings

I guess Rosenberg is new to this whole human condition thing. When you make something free, you're going to have to accept a lot of free riders - that's just the way things work out. What's even better is this, from a member of the Eclipse Foundation:

"The future of Eclipse is in danger," Michael Scharf, a member of the Eclipse Foundation's architecture council, said in an angry April blog post. "The problem is that there is no real pressure for companies to contribute back to the community and it is easy to use the Eclipse 'for free' for their own products. The Eclipse community should create peer pressure to prevent the freeloaders and parasites from getting away without punishment," he wrote.

Gee, let me shed a few tears for one of the people who have helped contribute to the idea that software development tools should be free, regardless of how much money it costs to develop them :)