If you know PHP, it's not too difficult to add content types to mSearch. They work almost the same way as content types for the nukeSEO Sitemap. mSearch stores them in the modules/mSearch/modules directory. When you add a new module there, it is enabled by default. It must conform to the class structure defined by the base search class, but it isn't difficult to copy and modify one of the existing modules / content types.
An important thing to to remember: do not store a copy of a module in the modules/mSearch/modules directory. Like the nukeSEO Sitemap, the search function will crash if there are 2 or more modules with the same class name.
I hope to have a tutorial that better explains how the search class works and shows an example of creating additional content types.
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