What sorts of things do you do online? You probably e-mail, chat, shop, read news, share photos, do research, post reviews, conduct business and more--and all these elements make up your digital identity.  

I found a neat, graphical digital identity map by Fred Cavazza on  Conversation Agent that organizes the different ways we use the internet and how close they are to our real identity. 

Some aspects of your digital identity include:

• Details--how and where you can be contacted personally
• Publication--what you share via sites like Flickr, YouTube and Del.icio.us
• Opinion--your likes and dislikes, shown through reviews and sites like Digg and Stumble Upon
• Audience--who you know through social networking sites

What about your customers or target market? When you think of them, can you create a similar map of their online activities? It could help you better reach them and understand where they're coming from and where they're going.