E-mail has become a critical focus for information governance efforts because it is the most common business software application and backbone of business communications. A 2013 survey found that two-thirds of global corporate e-mail users stated that e-mail was their favorite form of business communication, surpassing social media, telephone calls, and in-person contact. The document notes a difference in functionality between e-mail and social media - that social media tools like blogs, microblogs, and wikis differ from e-mail in their maturity and stability within enterprises.