As a 6-year Yelp Elite, my allegiances are pretty clear...I feel like most of the reviews on TA tend to lack the kind of detail and thought that I would find in Yelp reviews, particularly when it comes to restaurants.

That said, I do use TA when looking at hotels as a primary reference, but for domestic hotels, I do cross-reference against Yelp. Internationally, it's a bit of a crapshoot, but I use TA to help guide me a bit there.