Twitter announced that they now offer more targeting options for your Twitter Advertising.
Target by interests: by @usernames and interest categories
- · Target @usernames, to build an audience with similar interests to that @username’s followers.
- · Choose from a wide-ranging list of 350 interest categories.
Target by device
- · Tailor your content to reach users on laptops, desktops, tablets or smartphones.
Target by gender
- · Target by gender when you want to reach just the guys or just the gals.
You can get more details here http://app.tweet.twitter.com/e/es?s=1259914507&e=6448&elq=13c102ec32b14036a12644ce30de53bf