Surprise, surprise, people are committing faux pas after faux pas when it comes to using their mobile devices in public. Ninety-one percent of U.S. adults say that they have seen people misuse mobile technology, and 75 percent of U.S. adults say mobile manners are worse now than in 2009, according to a study released today by Intel that highlights the need for “increased awareness of mobile etiquette.”

The survey was conducted online within the United States by Ipsos on behalf of Intel from Dec. 10, 2010, to Jan. 5, 2011, among a nationally representative sample of 2,000 U.S. adults ages 18 and older with a margin of error of plus or minus 2.2 percentage points.

Top pet peeves cited by respondents included some familiar social infractions, including: texting or typing while driving; sending emails while walking; using mobile devices while on a honeymoon.

“Our appropriate digital technology behaviors are still embryonic, and it’s important for Intel and the entire industry to maintain a dialogue about the way people use technology and our personal relationships with technology as they continue to help shape societal and cultural norms,” said Genevieve Bell, Intel Fellow and head of interaction and experience research at Intel Labs, in a statement.

Intel says it commissioned the study to better understand what the rapid proliferation of devices in people’s lives means on a sociological level, as well as for the development of new technologies. The report notes that while connected devices can facilitate productivity, how people use technology in the presence of others can lead to frustration.

The survey revealed that U.S. adults see an average of five “mobile offenses” every day and top mobile pet peeves remain unchanged from Intel’s first examination of the state of mobile etiquette in 2009. The top mobile etiquette gripes continue to be the use of mobile devices while driving (73 percent), talking on a device loudly in public places (65 percent), and using a mobile device while walking on the street (28 percent).

“The premise of etiquette and how we socialize with one another is not a new concept. Whenever we interact with another person directly or through the use of mobile technology, etiquette is a factor,” explained author and etiquette expert Anna Post of The Emily Post Institute, in statement. “We can all be more cognizant of how we use our mobile technology and how our usage may impact others around us – at home, in the office and whenever we are in public.”