Googling remains a useful way to discover services, but it only finds a fraction of four supported systems, and there are many still unsupported. So here’s a complementary approach: Build your own bookmarklet.
The idea here is twofold. First, if your library uses one of the supported systems, but isn’t listed, you can just generate the bookmarklet you’ll need. Second, it provides a framework that can easily include more systems, as people discover and report the URL patterns that can drive them.
Excellent work, Jon. Keep disrupting!