Marketers make note: increased budgets for online ad spend are on the horizon.

Marketers make note: increased budgets for online ad spend are on the horizon. Borrell Associates' 2011 Ad Forecast predicts there will only be a moderate increase in overall ad spend next year, but budgets will shift resulting in the dramatic growth of online advertising.

According to the forecast, total online ad spend will reach $51.9 billion in 2011, demonstrating a 14 percent increase over this year. One of the biggest drivers of this growth will be the local sector, which will increase by nearly 18 percent to $16.1 billion.

Borrell predicts that targeted display ads run in local markets will more than double, with ad spend exceeding $2.3 billion. This estimate refers to local display ad spend for the traditional web, but Borrell also notes that many advertisers express interest in advertising on mobile formats that can alert on-the-go users when a business is nearby.

Marketers interested in tapping into this rising sector may want to invest in Google's locally targeted ads for smartphone users, which Brafton reported on earlier this month. Google uses local WiFi networks to determine users' locations and the displays targeted ads accordingly.

In addition to emerging digital platforms, Borrell Associates expects that increased ad spend on traditional online formats will fuel the growth of digital marketing next year. For instance, email advertising will rise 9 percent to $16 billion in 2011.

Marketers working with tried-and-true digital channels, such as emails, should remember that adding new elements can reinvigorate campaigns. As Brafton reported, T-shirt company Threadless recently reported 120 percent email revenue gains after it customized messages and promotions to recipients' specifications.

Katherine Griwert is Brafton's Marketing Director. She's practiced content marketing, SEO and social marketing for over five years, and her enthusiasm for new media has even deeper roots. Katherine holds a degree in American Studies from Boston College, and her writing is featured in a number of web publications.