Twitter has just added a new feature where you can tailor trends for your twitter friends.
From Twitter blog:
Trends help you discover the emerging topics people are talking about on Twitter. You can see these topics as a worldwide list, or select one of more than 150 locations. In order to show emerging topics that matter more to you, today we’re improving our algorithms to tailor Trends based on your location and who you follow on Twitter. These Trends lists are tailored for you by default on twitter.com and mobile apps like Twitter for iPhone and Twitter for Android. If you don’t wish to see tailored Trends, but instead want to see a more general list of Trends, just change your location on twitter.com. Of course, anytime you want a glimpse into the conversations that are happening on Twitter around the world, you can always select individual countries and cities to see Trends in those locations. Look out for tailored Trends as they roll out gradually starting today.