MSNBC.com has added advertising preferences to some of its online video clips, giving users the option to see fewer ads or shorter ads, as shown above.

The “fewer ads” option allows users to watch six or more minutes of video in exchange for 60-second ad spots, while the “shorter ads” option mixes 15- and 30-second video ad breaks every three minutes or so.

It’s worth noting the mode selection interface is particularly well-designed, with helpful diagrams that clarify each option.