There are a set of rules that must be followed when pro tweeting, failure is not an option, those who fail get mocked.
Your tweet must include an image of the beverage your consuming
Your tweet must be geotagged
Your tweet must contain the current location in alphanumeric form
Your tweet must contain at least one other twitter user your with
You tweet must include the hashtag - #thereitis
For bonus points you can add the following: 4sq/gowalla, food in picture of beer.
So there it is, remember kids always tweet safely.