I live in an area with a lot of estate agents, who send out lots of things asking us if we want to sell or let out our house. This is fair enough (even though it is irritating junk mail).
Recently, though, we've been getting quite a few to say that they urgently need to speak to us about our ongoing house sale or to say that they've noticed we have our house on the market and don't think our agent is doing a very good job. I know that this is a marketing strategy but I still had a microsecond of panic when I wondered whether my house had been put on the market without my knowledge (ridiculous, I know).