Comment 6 for bug 174443

As Matthew pointed out later in https://bugs.edge.launchpad.net/malone/+bug/317258/comments/2, there probably are other groups of related projects using Launchpad:

   "Granted, ... Launchpad abuses multiple 'projects' for a single project, but I expect similar issues occur with bugs in Bazaar vs. Bazaar plug-ins, Xorg vs. individual video drivers, network-manager vs. wireless drivers, gnome-power-manager vs. the Linux kernel, and so on."

So although this bug is about better duplicate searching among Launchpad's own projects, it might be useful to think about implementing duplicate checking among related projects generically too.