I think that if you annotate a pdf on your iPad in e.g. GoodReader, PDF Expert or iAnnotate and then select 'flattened' when you export it, the annotations will show up if you open it in e.g. Skim on your mac, maybe also Adobe Reader/ Preview.
just saw this app which purports to do what I was looking for. quite the price drop as well, from $7.99 to $0.99. not the prettiest looking app but for the price (and accompanying reviews), it's prob a pretty good deal.
just saw this app which purports to do what I was looking for. quite the price drop as well, from $7.99 to $0.99. not the prettiest looking app but for the price (and accompanying reviews), it's prob a pretty good deal.