. >> margaret sullivan is with text plus, a mobile app that's very interested in texting trends. so, it did a survey and found that the average teen sends 100 texts a day. that's about 3,000 texts a month. here's what else the survey found. >> 75% of texters say that it's rude to talk and text at the same time -- to text in the middle of a conversation, but 50% of kids say they've done it. >> but that particular rude behavior may be changing because of peer pressure. >> given how much teens are texting today, people might be shocked to find out that other kids are calling one another out on their rude behavior, so we actually have users who've said that in the past, when they're talking to a friend who's texting, and they're texting right in front of them, they'll shoot them a text saying, "you're being rude." >> given all the texts that are sent every day, it's not surprising that 85% of students admit to texting while in class, but you might find this surprising. >> a lot of those students have told us that it's their parents who are texting them during the class and during the