When providing a link to a PDF file on a website, is it possible to include information in the URL (request parameters) which will make the PDF browser plugin (if used) jump
Yes, you can link to specific pages by number or named locations and that will always work if the user's browser uses Adobe Reader as plugin for viewing PDF files.
For a specific page by number:
Link text
For a named location (destination):
Link text
To create destinations within a PDF with Acrobat: