Caveat Lector wrote:
Maybe not the right place but seems there are several web experts
here.

Can web spiders read and harvest e-mail addresses from a pdf file ?

Ask the Adobe people.

Many users and folks like QRZ.com are using jpegs not ascii for
listing
e-mails -- this seems to work.

So for pdf files without going to a jpeg --- are ascii text addresses

harvestable ?

Thanks

Loads fewer spams since switching to this throwaway web name, despite
all of the heartfelt objections of loser K4YZ.