I have created a flyer in InDesign (on a PC) which includes embedded links. I have exported into a PDF and made sure to select to include hyperlinks in the settings. I forwarded it to a colleague. When she e-mailed it out from her Mac, the recipient reported the links didn't work. The links worked when I sent the document to the intended recipient and other colleagues myself. Am I missing a setting?
There are lots of variables here, but the first thing I think you'd want to check is the PDF your colleague shipped by having her ship it back to you.
If the links work on the PDF your colleague shipped to you, you can probably attribute it to either the recipient's browser or a need for user education. If the links on the PDF your colleague shipped do not work, you can use Acrobat's compare function to sleuth differences between the PDF you shipped and the one you got back.
Give that a test, and let us know what you find out.