Mass Follow allows you to search by keyword and then mass follow the users returned in the results. No longer do you need to add each twitter user one at a time.
Simply enter your Twitter username and password to log into your account, once logged in you will see a keyword search box. Enter your keywords separated by commas. Select the users you wish to follow or select all, then mass follow them! You can follow upto 100 users at a time.
Normal Twitter limitations apply.