кста́ти кстати

Meanings

1. as a matter of fact, for the record, incidentally
2. by the way, incidentally, besides, in fact
3. useful, helpful, handy, welcome, convenient

Examples

• Кстати о спо́рте, во что вы игра́ете?
  Talking of sports, what sports do you play?
• Кстати о путеше́ствиях, вы когда-нибудь бы́ли в Австра́лии?
  Speaking of travel, have you ever been to Australia?
• Кстати, откуда ты?
  By the way, where are you from?