It's pretty common knowledge that when exporting a PDF from the ReportViewer control in local mode, you get a much larger document back then if the same report was exported via the ReportServer web service. I wrote a little entry about same here.

Well, Christopher (thank you, whomever you are) has found a nice workaround which involves compressing the PDF byte stream with a FREE 3rd party library. It's a nifty way of getting your PDF shrunk back down to a management size.

Here's where to download it:

http://www.snapapps.com/Components.aspx

...and here is where Christopher's discovery was posted.

http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=1138832&SiteID=1

 Thanks, Christopher! (great name, BTW)