Search remains the main engine for Google’s core business, but display is rising fast: we estimate display gross revenue will reach $9.2 billion in 2013, representing 16% of projected gross revenue (excluding Motorola)

Gross revenue from YouTube looks set to more than double to nearly $4 billion by 2013. Revenues from Google’s ad networks and platforms are also growing strongly, mainly to the benefit of publishers

We project Google’s net revenue from display next year will amount to $4.2 billion, equal to 10% of net revenue from its total advertising business

Recent news flow and feedback from media buyers indicates that growth in UK internet advertising is slowing due to the ongoing weakness in the economy

Paid search, buttressed by its link to e-commerce and measurable ROI, is suffering less than internet display, with growth in spend on social media slowing and price deflation especially for non-premium inventory

Online classifieds are also being hit by the economic woe, resulting in some sectors growing more slowly and non-advertising communications taking a larger share of spend; the secular shift to the internet continues

Analysis of comScore data suggests that ad volumes fell in April on Facebook’s PC-based website in the US and UK, which we estimate account for 60% of ad revenue Seasonal effects may account for some of the decline, but increasing pressure on ad performance and pricing, due to the tough economic climate, and slowing growth in PC usage of Facebook are other probable factors As a result we expect Facebook’s ad revenue growth slowdown to continue in Q2, with audience saturation in key internet markets and increasing mobile substitution limiting future growth potential from display advertising

Facebook will confirm its status as an internet superpower on 18 May when it goes public at a valuation now expected to be between $93-104 billion

The social network’s revenue fell quarter-on-quarter for the first time in Q1 2012, partly due to seasonal effects, amidst a broader slowdown in annual revenue growth on the shift to mobile consumption

Investor interest is being fuelled less by current performance than longer term potential for growing Facebook’s audience of 901 million and improving monetisation

On 9 April Facebook bought the 547-day-old Instagram for about $1 billion in cash and shares, acquiring 40 million users, strengthening its positioning in mobile and photo sharing and preventing anyone else from buying it first

That Instagram could grow to be so big, so quickly, and with just 13 staff and $7 million of funding shows how precarious Facebook’s market leadership might still be. This is not a one-off – many more companies will use cloud services, mobile and social to achieve similar growth in future

This acquisition comes in the context of explosive growth in mobile and social and an accompanying land grab by Facebook, Amazon, Apple, Google and many others. More eye-catching deals are likely to follow

According to IABUK/PwC, internet advertising grew 14.4% like-for-like in 2011 to £4.8 billion, overtaking press to become the single largest advertising medium

Search was again the main growth driver, surging 17.5% to £2.7 billion last year, while display rose 13.4% and classifieds increased just 5.2% on the weak economy

We now forecast internet advertising will increase 14% in 2012 and 12% in 2013, taking spend to £6.1 billion or 36% of UK advertising, up from 30% in 2011

Google+, the social network, has around 100 million users worldwide, although user growth appears to have stalled and usage is low on weak network effects

Facebook users, now 70% of the adult internet audience (excluding China), have no incentive to switch to Google+, starving the social network of vital momentum

Facebook is likely to dominate socially enhanced search, unless Google+ takes off, which seems unlikely

Three drivers are increasing UK internet consumption: a growing number of older PC internet users; digital natives, especially younger people with high incomes, spending more time online; and rising adoption of the mobile internet

Despite rapid mobile user growth, internet usage remains a PC-centric experience as time spent on mobile is constrained by screen size, ‘on the go’ use and data pricing. These factors are less likely to inhibit tablet use

Everyone uses the internet as a retail, communications and information service and traffic is growing as older users come online. But under-35s are increasingly using the internet as an entertainment destination as well, sharing video content on social networks and driving a huge increase in time spent on YouTube

Facebook’s IPO prospectus confirms that the social network is an internet colossus, with 845 million users worldwide and $3.7 billion in revenue in 2011

Growth potential in display advertising, which accounts for the majority of revenue, seems limited with increasing mobile substitution in major ad markets and future user expansion largely in lower yielding countries

There is significant potential to increase income from payments and other businesses beyond social games, but the company’s strategy is unknown at this point

Google’s UK revenue grew 23% to £676 million in Q4 2011, taking 2011 revenue to £2,525 million, up 20% year-on-year, 2 ppts below our November estimate

Globally, gross revenue rose 25% year-on-year, with mobile and display performing strongly, but rising costs pulled net revenue growth down to 8%

Our growth forecasts for Google’s UK revenue remain unchanged; we expect UK internet ad spend to rise from £4.7 billion last year to £5.8 billion by 2013, representing 35% of total advertising, as print continues to fall