I know people who won't book a trip without looking up every review on TripAdvisor. Turns out, people who use other travelers' online reviews are in the majority.

A recent study from the Access America Vacation Confidence Index highlights social media travel trends.

Here are some of the findings:

• 60 percent of consumers reported that they factor other travelers' online reviews into their plans when booking a vacation

• Among travelers who share reviews of their travel experiences online (24 percent of respondents), social networking sites such as Facebook are most popular. Nearly one in five (18 percent) say that they share their travel experiences on social networks, more than double the proportion of those who post on travel review sites (8 percent)

• Adults under 35 are more likely than those who are 35+ to share their travel experiences online (35 percent vs. 20 percent), particularly on social media sites (29 percent vs. 6 percent)

• Travelers under 35 are most likely to say that online travel reviews influence their travel plans (74 percent) while those 55 and over are least likely to be influenced by reviews (44 percent).

• Nearly 79 percent of respondents with a household income of $75,000 or more factor other travelers' reviews into their own plans, while less than half of those with an income of under $25,000 do so (46 percent).

• Nearly two thirds of respondents (63 percent) find other travelers' reviews to be trustworthy, while 29 percent are less trusting.