According to On Device Research, 70% of mobile users consider mobile ads on smartphones to be a "personal invitation," not an intrusion. Helping to change opinions in favor of mobile adsare the efforts of mobile ad networks like Airpush, which have been praised for highly effective innovations in mobile ad formats and ad targeting capabilities.

Is this the beginning of the end for Groupon and their peers? Certainly not, but they really need to find ways to harness the potential they have in their vast database of subscribers, if they are to stem the rot and remain successful.

Now that the huge hype created over the Facebook IPO has given way to more practical and analytical thinking, it is time to take a closer look at the tech IPO scenario.

UK Twitter users today shared their scorn for skinny-jean-pushing Topman's current T-shirt designs that were quoted as being "offensive to women" and "condoning aggressive behavior".