Cable company Turner is experimenting with ads that are two minutes long.

"Those laws of physics are different on mobile."

Social media reaction has been swift.

It's not cat videos the video giant wants to sell you.

How to advertise to a hard-to-pin-down demographic.

Algorithms created awkward ad placement.

Facebook is giving advertisers cell reception data to serve ads more efficiently.

Do they risk undermining their core, indie-leaning fan base?

Twitter is teaming up with the Weather Channel to help advertisers.