Why would only part of the contact info can be copy and pasted?

Probably it was there as a graphic and not as characters onscreen, and probably it was done that way so it couldn’t be picked up by spam bots.

@Jeruba there is nothing visibly different from all the other places I copy and paste from. Thanks.

If you can’t highlight the individual characters themselves (the way you can in, say, this message), and instead it’s like a solid block (as, for example, the words ‘Fluther.com’ next to Dr. J in the panel at the top of this page), it’s a graphic.

@Jeruba, By nothing visibly different I was covering Edited: all possiblities (if there are others) including graphics.
Why is it called Dr. J by the way?