In June of this year, Google added an Optical Character Recognition feature to its free Google Docs service. This allows users to upload PDF or image files (.jpg, .gif, or .png formats) from which Google Docs attempts to automatically create an editable text file.
This is an excellent free resource for casual users who need to occasionally convert an un-editable PDF document, or (with a flatbed scanner or camera) need to include text from printed media in an electronic document.
Google Help Document: Uploading and exporting: Uploading image files with text to Google Docs
