This will be the first of a series of post on Twitter Tips (slightly over 140 characters).
When following others, consistency is more important than quantity. Following 50 people a day is better than following 200 every couple of days. Try to keep the amount of people you are following equal to the number of people following you. Take an interest in the people you are following, others will notice and your numbers will multiply on their own. Tweet regularly and give your followers value.