Facebook’s Sheryl Sandberg defends mobile advertising plans

CEO says smartphone 'may be more important' than TV for advertising and plays down concerns about unwanted messages

Cash is on the line when Facebook comes calling…

Facebook has more than a billion users, and is bidding to reach more by a smartphone takeover – with a twist, writes John Naughton

Mobile advertising triples to record levels

UK mobile advertising grew 148% year-on-year in 2012 to £526m, up from £203m in 2011, as total digital ad spend hit £5bn. By Mark Sweney

Media Guardian 25: Hearst Magazines UK keeps the gloss on its top titles

Good Housekeeping publisher is performing robustly after reorganisation under chief executive Arnaud de Puyfontaine. By Josh Halliday and Mark Sweney

Amazon defends use of swear word in ad as ‘light-hearted’

Watchdog bans ad featuring 'offensive' message, but retailer says it only upset a 'small minority'. By Mark Sweney

The Book of Mormon offers gospel lessons in social-media marketing

Lyn Gardner: The musical's success owes as much its clever use of Twitter and Facebook as anything that happens on stage

This is no ‘golden age’ of journalism. These are the news media end times

Bob Garfield: Don't be fooled by evangelists of 'free': editorial ethics and real reporting have been blown up along with the business model

BSkyB and BT force Virgin Media to drop unlimited broadband ad claim

ASA rules claim in campaign was misleading, given that heavy users' download speeds can be cut by up to 50%. By Mark Sweney

Daily Variety abandons print edition after 80 years

Hollywood paper to live on as open-access website and weekly magazine

Botnet fraud costs display advertisers $6m a month, security researchers say

'Chameleon' botnet falsely views billions of pages and adverts on about 200 sites owned by a small group of publishers. By Charles Arthur

Wonderbra ad-man calls time on 30-second TV commercials

Creator of famous 'Hello Boys' ad, Trevor Beattie, says five seconds is right length for TV advertisement. By Mark Sweney

Google keyword advertising is waste of money, says eBay report

Study by auction website says billions spent by advertisers on keywords to maximise Google ranking has little effect on sales. By Mark Sweney

Big data: the greater good or invasion of privacy?

Pratap Chatterjee: There are benign uses of data-mining, but for most of us the bigger issue is protection from corporate and state snooping

Telegraph group cuts 80 print jobs as daily and Sunday titles merge

Fifty digital posts will be created as part of root-and-branch restructure, taking overall staff reduction to 5%. By Roy Greenslade