When someone says "Craigslist spam!", is the first you think of a) spam posted to craigslist as listings, or b) emails advertising something (surreptitiously) t

When someone says "Craigslist spam!", is the first you think of a) spam posted to craigslist as listings, or b) emails advertising something (surreptitiously) to people that have listed their property on craigslist? Not that the latter isn't "spam" of a sort, but it doesn't feel quite like "craigslist spam".