Some time ago, Twitter configured that you can find your own Trending Topics based on your location and people whom you follow and follow you on Twitter.
To activate Customized Twitter Trends you must access your account and change Trends settings.
A message will appear to apply custom trends just for you. Twitter Trends offers a unique way to get closer to what you care about. Trends are made for you based on your location and who you follow.
Once you activate personalized trends, you will see the TT APPEAR. The do not have to be the most popular in your chosen country but adjusted to your current location or activity of you and your Twitter followers.
Surely Customized Twitter Trends are a new twist on the giant microblogging social network that every day surprises us with new features and makes it more interactive to follow news and highlights of the moment.
Link | Twitter