As per a recent report by internet marketing research firm eMarketer, the revenue share of online advertising is going to approximately double from it’s current level in 2007. The US advertisers are expected to spend around $42 billion up from the current levels of $21.7 billion.

Those who question the long term business model of firms engaged in online advertising, should read the summarized report available here.

This is great news not only for the bigger players like Google/Yahoo but also for smaller firms who are still trying to establish themselves in this field. However, apart from the volume of online advertising, what may be more interesting is to see how online advertising strategy evolves into something even more relevant and targeted.