Do extensive research

One way to impress your guest is to demonstrate that you've done your homework on them. It will increase the chance that your guest will share the episode with their audience or refer you to other guests.

• Use Twitter advanced search. Filter by min. faves or replies to find which topics started a conversation.
• Use search hacks to pull up your guests best content. Use search operators in Google or BuzzSumo to find content associated with a person.
• Research your guest's LinkedIn profile.
• Quora answers. If your guest is active on Quora, search through their answers for ideas or questions to ask.