marissa-mayerYahoo reported its latest quarterly financials yesterday, impressing Wall Street with Q4 revenues of $1.22bn and a profit of $370m.

It’s the first time in four years that Yahoo has recorded year-on-year revenue growth – a boost for CEO Marissa Mayer as she continues her turnaround efforts for the company.

It was clear from her conference call with analysts last night how central mobile is to Yahoo’s comeback strategy, with Mayer saying that the company will focus on around 12 new products, with each targeting an individual “digital daily habit”.

Yahoo Mail and Flickr are the first to have been relaunched under Mayer’s leadership, with the latter already benefitting from a slick new mobile app that has led to 25% more photosbeing uploaded and viewed every day.

Mayer told analysts that Yahoo has an audience of more than 200m unique monthly users on mobile, although the company is still thinking hard about how best to make money from them.

It’s those dozen digital-daily-habit products that will be interesting to watch in 2013 though. Subjects like sports, news and finance are tailor-made for inventive mobile apps, so there’s clearly an opportunity for Yahoo to reach existing, lapsed and new users alike on mobile.