Ofcom has published reports examining convergence in communications markets. The reports look at market trends, industry characteristics, and consumers across converged devices and services. Content is increasingly being delivered over multiple networks to various devices. There is growing interest in on-demand content online and mobile broadband through laptops and PCs. Games consoles also offer converged functionality, allowing viewing of DVDs and listening to CDs. Many consumers engage in "media stacking", using multiple media sources simultaneously.