Linux.com (which shares a corporate overlord with Slashdot) has an interesting look at what going proprietary can mean for your overall effectiveness. Using Firefox extension "Interclue" as the object lesson, the piece looks at both the engineering and social difficulties surrounding the project. "Even more significantly, the efforts to commercialize only detract from the software itself. The basic idea behind Interclue would make for a handy Web utility, but seems too slight to build a business around. The effort to do so only leads to complications that do nothing to enhance the basic utility, and to pleas for donations that can only annoy. The result is that, if your position on free software doesn't lead you to avoid Interclue, the efforts to monetize it almost certainly will."