As several have pointed out, people identifying themselves as ID
include a wide range of views on the extent of biological evolution by
"natural" processes and on the age of the earth. A confounding factor is
the tendency for popular YEC to seize on anything that sounds vaguely
anti-evolutionary or young-earth. For example, a post quite some time ago
reported a Jehovah's Witness publication citing Behe's ideas as supporting
their YEC position, whereas Behe accepts "natural" evolution as possibly
adequate from the first living organism on. [Similar tendencies occur in
old-earth atheists, but they are unlikely to be confused with ID.] The
current ID movement seems united in denying that God created life
"naturally". [By "natural" I mean "following the usual way in which God
runs things, which we approximate by scientific laws.]
Microevolution and macroevolution are not the best terms in this
context, since the biological and paleontological use of the terms is
different.
David C.