Some have found Adobe Reader to be annoying, bloated, and just a plain pain in the rear. There are alternatives like FoxIt, but if you want to abolish PDF readers all together and still be able to look at the occasional PDF, here’s a nifty service called Google Docs Viewer (PDFMeNot.com is no longer a available and redirects to Google Docs Viewer)
This service allows you to either view PDFs that are linked somewhere on the web, or upload a PDF from your computer.
While this service does fine with standard PDFs with basic text and image, you may run into issues with PDFs containing interactive elements.