Brett Terpstra shares a handy tool for downloading collections of his TextExpander^textexpander snippets. The page lets you select a group of custom snippets, choose a shortcut prefix, and download a .textexpander file based on your options, ready to import into TextExpander.
Try it at http://brettterpstra.com/share/te-snippets/
I already maintain a large collection of custom snippets, but these sets include some great additions. TextExpander is one of those rare utilities that saves me more time than it takes to configure.