As Acrobat Reader is a pervasive tool for everyone, Google Docs makes it more widely present by integrating this technology to their pool of online services.
Now, Google Docs allows you to upload PDF documents and view it instantly with their PDF viewer. Currently, the tool is only for viewing; no editing of PDF yet. You can copy-paste text from the PDF viewer. You can also share your PDFs, of course.
Yet again, this Google Docs enhancement came from users feedbacks and requests. Granted! Try it now.
[ via Google Docs Blog ]