McDonald's is inescapable for American children; elementary school age kids in the U.S. see an average of 254 ads from the fast food giant each year and pre-school age kids see 208.

Unlike other major fast food brands, McDonald's is the only chain to reach kids hundreds of times each year.

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Twitter's post-IPO monetization quest continues with a new unit that runs ads from American Express before video snippets from Fox programming.

The brand will run such ads before videos from Fox shows including Glee, Brooklyn Nine-Nine and So You Think You Can Dance, among other shows, Jean Rossi, EVP of sales for Fox Broadcasting, told Variety. The first such ads launched last week.

SEE ALSO: The Great Display Advertising Cash-In of 2013

Twitter began running Fox clips as part of Amplify, a program that brought sponsored clips to users' news feeds in May. As Gawker points out, that means that the AmEx ads are, in effect, ads on top of ads.

Though Twitter's IPO was considered successful, the company is not expected to post a profit until 2015 at the earliest. Since the company's main source of revenues comes from advertising, Twitter has to walk a fine line between pleasing advertisers without compromising the user experience.

You may have heard about Big Blue’s recent ad campaign that takes a dig at Amazon.com. In its marketing material, IBM claims to power 270,000 more websites than Amazon, via its cloud computing service. It’s a flimsy jab at Amazon because IBM has been a major laggard in the cloud rental market, having bought its way into the business in July with its acquisition of SoftLayer Technologies.

Far from being a cloud pioneer, IBM has spent most of the past few years downplaying services such as Amazon’s as insecure, low-margin businesses of little interest to a serious computing company. “You can’t just take a credit card and swipe it and be on our cloud,” IBM executive Ric Telford told Businessweek in early 2011. The company’s pitch to customers was that it knew them intimately and its cloud system was safer. But thousands of startups, including Dropbox and Netflix, were more than happy to swipe their credit cards and get going on Amazon.

Since its launch five years ago, the Mashable Job Board has been a hiring hub for more than 3,000 employers. We have showcased career opportunities from companies like Google, Edelman, Viacom, Yelp, American Express, NBC Universal, Digitas and many others seeking to attract our audience.

This past August we relaunched the Job Board with a fresh design and many new features. Job seekers can now create user profiles, upload resumes and application materials, sign up for job alerts, browse our employer directory, and search and apply for jobs through mobile.

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