If you work in PR and are interested in the latest thinking on media monitoring, PR planning, media analysis and social media measurement, these are the must read stories from the last week.

This week’s top PR and social media picks:

• Obviously big news today, Facebook hits the stock market. According to Time magazine, “Facebook’s IPO represents the triumph of hype and hope over financial analysis.”
• …and how Twitter will make money. The company now has 10 million users in the UK.
• I thought we’d stopped talking about this but it’s reappeared again on Mashable. The best and worst times to share on Facebook and Twitter.
• 10 mandatory ingredients of online video content.
• Has Guinness come up with the best QR code ever? (In all seriousness though QR codes are mostly rubbish).

• How time stands still in women’s magazines.
• Are newspapers the new Yahoo!? Does this even make sense? It’s what Google’s head of news Richard Gingras said. Ask him.
• Something I’ve thought about *a lot* recently: will we ever stop using the floppy disk image as a save icon? Use that down the pub tonight (thank me later). Here are some other icons that don’t make sense any more.
• Now for something about sexting. Snapchat is a new iPhone app that allows users to send others photos and control how long receivers can see them. These photos last for up to 10 seconds, before they disappear forever. Sounds brilliant.
• Here’s a cheery little image: The Newspaper Extinction Timeline (click for full report)

• Meanwhile, in Columbia… Two men are facing a stretch in the Big House after robbing an Internet cafe and forgetting to log out of Facebook.
• What people want versus what they share on social media.
• Fiat pulled the fast one over Volkswagen by trailing the Google Street View car. Clevs.
• The Twitter news map of Britain.
• How Yahoo! killed Flickr and lost the Internet. Great work guys!
• Can a graph of a news article’s words tell you more than reading it? New insights from InArticle.

SEO Corner:

• Project management for SEO.
• SEOs are from Mars, PRs are from Venus. If that needs further explanation check out the SlideShare.

Infographic of the week: The F*ckyeah! Tumblr trend