On some level, most larger businesses are engaged in social media. I say larger only because we have discussed the plight of the SMB in this space before and it is not safe to assume they are doing anything at all with social media.
To what degree and with what level of success these businesses use social media varies across the entire spectrum of runaway success to abject failure. This is not unusual because that’s how things work with everything in life, not just social media.
A recent study by Ketchum and FedEx tries to capture just how or to what degree most businesses are jumping in the social media waters. eMarketer shared part of their study with this chart.