Google made quite a bit of changes to the algorithm and hurt almost every travel product in favor of it's own products.
I wonder if you were effected by this at all and what did you do to deal with it?
Google also gives a lot of credit to how a business is reviewed in travel and because we have hundreds of 5-star reviews between TripAdvisor, Yelp and Google+ and many more internal reviews on our site we've only seen our rankings rise recently. We focus on having the best reviewed product in each of our categories and it seems Google has rewarded us for that.
It's something we're definitely on the look out for though, absolutely