Open PDF as rich text in OS Cocoa applications

I installed this free DevonTech OS X service, and, as promised, I can now open a PDF in TextEdit and edit it. That's really kind of miraculous. So why is this so obscure?

DEVONtechnologies : Freeware : Services

PDF2RTFService 1.0

PDF2RTFService is a free filter service that enables many Cocoa applications, for example TextEdit or Apple Pages, to open Adobe PDF, PostScript and Encapsulated PostScript (EPS) files as paginated rich text documents. The application just needs to be able to read rich text documents. The actual conversion is done by Quartz and the PDFKit of Mac OS X 10.4 Tiger, PDF2RTFService post-processes and paginates the output for better results.