An article published in Forbes news magazine said Twitter Inc.'s reason of its latest acquisition of mobile ad exchange startup MoPub was beyond selling ads in third-party apps.  The article disclosed that Twitter's acquisition signaled that it had become focused on launching its initial public offering (IPO) next year.

On Monday, Twitter agreed to purchase MoPub. The startup provides a mobile-focused advertising exchange that allows advertising clients to mobilize their ads in a single venue. Twitter's vice product of product for revenue Kevin Weil said in an interview, "We are going to continue to invest and extend MoPub's existing business, and that means selling ads in other apps on iOS and Android." 

According to the Forbes article, the plans for MoPub looks like Google Adwords for mobile. As an online broker of ads for sites, Google's core advertising product brought in total advertising revenues of USD42.5 billion in 2012. Adwords is Google's main source of revenue.

Although financial details of the acquisition were not disclosed, multiple reports cited sources that MoPub would be bought at around USD300 million to USD350 million.