Explosion of electronic touch points

I received an email today from someone and, as you typically find in a business email, the sender's signature block included their contact details. What interested me this morning were the 6 different contact methods listed - they included (in this order):

• Telephone
• Mobile
• E-mail
• Skype
• Second Life
• Blog (internal)

The other day I also noticed another user had these 5 options:

• Mobile
• Telephone
• Email
• Web
• Blog (external/personal)

I wonder how social networking sites, customer relationship management systems and other address book tools are keeping up with this explosion of electronic touch points? Neither person listed a physical address or a fax number (however, their traditional and email contact details hinted where they might be - i.e which country).

I'd like to know: What do you list on your email signature? What contact methods are most important to you? Why do you decide to list one but not the other?

Technorati tags: Email Signature Blocks, Customer Relationship Management, Social Networking Sites