Nearbytweets is a free online service which helps us to find out the blogger/people and friends who use twitter and who are tweeting on micro blogging concept twitter? We can expand our search in three ways. Location/keyword and area distance. I tried it in my location Ludhiana and found many blogger near to me not only in Ludhiana but in my area who I know by face. So may be this will help you to find old school friends in twitter.