Can I leave business cards at other people's businesses?

Yes, but only with permission. Ask the owner or manager before setting cards on a counter or pinning one to a bulletin board. Most independent operators are glad to help, especially when you offer to display their cards in return, and that kind of reciprocity is how ongoing referral networks get built.

• Always ask first. Placing cards uninvited can get them tossed and sour the relationship.
• Offer to display their cards in exchange to make it a two-way deal.
• Pick businesses that share your audience but do not compete with you.
• Check back periodically to refresh the stack and stay top of mind.