I read a comment on a thread the other day that seemed to be making a modified version of a false argument I heard proposed about six months ago in the blogosphere. Unfortunately I couldn't track down the comment, but I do recall the first place I heard its premise:
"First, just so everyone's clear: 'Macro-evolution' and 'micro-evolution' are made-up words concocted by creationists to make themselves sound scientific. Biologists don't use them. They're scientifically meaningless. They're just different stages in the evolutionary process; 'macro' is just 'micro' over a longer period of time. Also, 'macro-evolution' (if people insist on calling it that) has been observed, both in the field and in the lab. Just so we're clear."