47% of companies are expected to increase their inbound marketing budget for 2012, according to data from online business community G+.

It’s no wonder, since the average cost to acquire a new lead through outbound marketing in 2011 was $373, compared to just $143 from inbound marketing.

The main reason for this budget increase however was found to be past success using inbound tactics, which attracts customers by offering useful, relevant information.

G+ states that one of the biggest advantages companies find in using inbound marketing is that leads cost far less to acquire.

Here, G+ explores the inbound marketing boom and how businesses are utilising it.