Step One: Do not take pictures of yourself wearing little or no clothing and send them to people on Twitter
This should actually be fairly simple as repeating this mistake is a complicated multi-step process. You have to find someone to contact, take the picture itself, and then transmit that picture to them using Twitter. At each step along the process, ask yourself if you are taking a taking an inappropriate picture of yourself and sending it to someone on Twitter. If the answer is yes, STOP.
Step Two: There is no step two!
Seriously, if you've mastered step one then you are golden on this one. Give yourself a pat on the back but be warned, congratulating yourself on Twitter for not posting inappropriate pictures of yourself is probably also not a good plan.
Step Three: Don't have a name that makes it even more embarrassing if you forget step one.
Step Four: Really, just read step one
While this may seem simplistic and we're obviously having a little fun at Rep. Weiner's expense this does seem like the ideal reminder that nothing is really private on the internet. If you have concerns that something you're about to post (be it on Twitter, or Facebook, or wherever) might come back to haunt you, your best bet is to just not press send. It's the best privacy advice we've found for the Web and, who knows, it might save your political career one day.