Yahoo is locking people out of their email if they use ad blockers

Yahoo is angering the dwindling number of people who still use its email service with a test run of a feature that locks out anyone who has an ad blocker installed.
Several Yahoo users complained that they encountered an error message when trying to open their mail account on Thursday in an AdBlock Plus forum thread first spotted by Digiday .
Yahoo joins a growing number of media sites to experiment with barring ad block users altogether as the technology available to do so becomes more widespread.
New York Times CEO Mark Thompson also said in a recent earnings call that the paper is looking into "technical solutions" to combat blockers.