14 per cent of Facebook revenue comes from mobile, up from zero when it started monetising in February this year.

126m users now only access the service on their phones, according to its Q3 results, an increase of 24 per cent from the previous quarter.

These gains have been boosted by mobile-only users in key emerging markets, although growth here is slowing. Brazil’s monthly active users were up 13 per cent on the previous quarter, reaching 61m. India hit 65m, an 8.5 per cent increase. The social networking giant says it has 171m active monthy users in the US, an increase of 1.71 per cent from its last quarterly review.
The results said: “Our revenue grew 36 per cent from the first nine months of 2011 to the same period in 2012, 88 per cent  from full 2010 year to full 2011 year and 154 per cent from full 2009 year to full 2010 year.
“Historically, our user growth has been a primary driver of growth in our revenue. We expect that our user growth and revenue growth rates will decline over time as the size of our active user base increases and as we achieve higher market penetration rates.”
Through the recently announced App Install Ads, as well as Facebook Gifts and enabling users to pay to promote their news, Facebook is now looking at how it can make more money from the users it already has.