iPhone users are an impulsive lot - they're nearly twice as likely to have regretted making a Facebook post as the population at large.
According to a survey from shopping site Retrevo, 59 percent said they'd posted something they really wished they hadn't, compared to just 32 percent of social network users generally.
"We live in a digital age where everything is expected to be public and instant," says Manish Rathi, Retrevo co-founder and vice president of marketing. "Given the urgency and frequency with which people are expected to share, it's no wonder some postings might later be regretted."
And the effects can be pretty significant. An amazing one-third of those who regretted a post say it ruined their marriage or relationship with someone, or caused problems at home or work.
Many were able to recover from their mistake, with 40 percent saying they could delete the offending post before any harm was done.
The young are particularly prone to dumb posts, says Retrevo, with 54 percent of under-25s expressing 'poster's regret'. Only half as many over-25s said the same thing.
It wasn't just the iPhone users that ended up red-faced - 54 percent of smartphone users generally said the same thing. Retrovo wonders if it isn't just because it's all too easy.
"Maybe people wouldn’t post as much if they only did it at home in front of a "real" computer," the company suggests.