Has anyone ever seen this before? I posted something for sale on Craigslist, and someone responded with interest but (1) said they "don't reply from cl mail" and telling me to email a different address and (2) more weirdly, below all that is pages and pages and pages of what looks like a children's book text. The text is actually in white and I only saw it because I was in dark mode. I looked later in light mode and you don't see it at all.

@mmasnick yes. Constantly. I think the text is there for spam filter purposes?