Definitely a concern, as reviews likely have less exposure than something like Reddit and HN posts.
We have a few strategies in mind where users will either earn votes or have limited votes available. For example, users could only vote when above a certain wisdom score and/or could only vote, say, 10 times a day. These are strategies we'll have to emperiment with.
Skipping is a fun feature I added to try to evolve into a social feature. Many users use review sites to plan trips, so we added this. Basically, you 'skip' to any number of places you like, which forms a sort of itinerary with directions and ETAs. In the future, we'd love to expand this feature a bit, allowing users to share their 'skips' with friends,or possibly even advertise public and/or private skips (think of a bar crawl for example).