Cornell-based research using Twitter posts suggests that people are happiest in the morning hours, with users using words like "awesome" and "super" most often from 6 a.m. to 9 a.m. Tweets, it seem, later turn remorseful and angry, with many users employing words like "annoy" from 3 p.m. to 4 p.m. (Side note: not surprisingly, this is also when most blogs receive the crankiest commentary from the peanut gallery.) What does this all mean? Well, according to Money Watch, you should not make any big decisions after 3 p.m.

"[N]ot only are you likely to be groggy and less disciplined around 4 p.m., you're also probably not too happy, either. Doesn't sound like the best time to decide anything terribly important," suggests Money Watch's Laura Vanderkam, adding that the best time to make any grand, life-altering decision should happen from 6 a.m. to 9 a.m. "Use that time to focus on work instead, especially if you're trying to think about long-term goals," she recommends.

What about you? At what time do you post some of your nastiest or most regretful Tweets?