I've got 3 WordPress blogs and I want the search field for any 1 of them to search in all 3 blogs. The results page should have everything grouped by the different blogs, all the results of the search term in blog 1, then blog 2, etc.
I have all 3 blogs set up as different databases, but I could use the Multiply plugin to do this if that would allow a search across all 3 blogs. I could even use the same database and just create different tables for all the installations. Whatever would make it easy.
Is there a way for the search field from 1 blog to search for the term in all blogs and have all results show up on one page? Further, could there be checkboxes to allow the user to decide which of the 3 blogs to search? Thanks for your time.