Today I was thinking it would be great if we could include a photo image of our "Google Business" or "Yelp Business" logo that would act as a link to include on our follow up emails to our guests. We often will ask them to leave us a review on Google or Yelp and I think if they could see the graphic of each and be able to click on it to send them to our specific business listings it would be more effective than just sending them the URL in our follow up email.
You already can do that. Create and email template to thank them for their stay and solicit review . Insert image, and image link to your Google or yelp listing.
Adding a synch to Google Places or Yelp would be a great addition.