Twitter advertising is different from most of online advertising options, with elements of cost-per-click, display, and social media ads all wrapped up in 140 characters or less. This guide will help you reach your Twitter marketing objectives.

Menlo Park, Calif.?Facebook offered advertisers a cost-per-click discount of up to 45% in the fourth quarter of 2011, provided those clicks directed users to other Facebook pages, according to a report by Facebook marketing agency TBG Digital.

Marketers running Facebook ads that don't drive a consumer outside of the social network have seen cost-per-click rates drop by up to 45%, according to a study released by Facebook marketing firm TBG Digital on Jan. 16.

SAN FRANCISCO & LONDON—-Regarding Facebok advertising, cost-per-click is lower when one uses ads with social context. (22 hours ago)