Here's the sentence: This problems comes from a newspaper column where people write in with a problem, and other members of the public give their advice. I couldn't find the expression "in with" in the WR dictionary, but I think that is an "about" synonyms in this case. Is "about" correct in this sentence? Are there any difference between them? What does the expression "in with" mean in general? I'm sorry if my questions aren't so interesting or clever. I only speak a little English.