Dive Brief:

• Twitter's stock debuted up more than 74% over its initial price at $45.10 Thursday morning.
• The IPO raked in $1.82 billion, selling at $26 a share in a sale led by Goldman Sachs, Morgan Stanley and JPMorgan Chase.
• Twitter's stock starts trading publicly Thursday morning, and AdWeek speculates that shares could reach $30 by the time public trading begins.
• As with many Web sites and social media platforms, Twitter's business model revolves around advertising, but it has yet to become profitable.

Dive Insight:

The micro-blogging platform offers "promoted tweets," which allow tweets from a company like Verizon, for example, to show up when a user searches for AT&T. Corporate accounts like Macy's can also promote themselves in the site's "who to follow" box. Additionally, companies and agencies can pay to place "trends," like the names of new products, in the list of topics that are popular worldwide or in specific cities. Still, Twitter has yet to become profitable, reporting a $79.4 million loss in 2012 despite sales of $317 million, and a report this week from Forrester questioned the value it provides marketers.