Communication - How do your customers see you?  For most businesses, a website is the tangible embodiment of who you are.  It's generally the first impression that any potential client or customer may have of what you do or who you are as a business.  Are you presenting a unified front by having a consistent logo and message?  Yellow pages, meet Google - consumers, more than ever are turning to Google and other search engines to find landscapers, consultants, doctors, etc.  More than ever, people are desiring to be more informed about what a business does, how it operates and most importantly, how it appears.  

Collaboration - Whether you're a business of one or one thousand, being organized is important. Sharing information internally and with other collegues is essential.  A shared calendar, official business email accounts, document repository are all just tips of the collaboration iceberg.  

Interaction - What do people do when they visit your website or get an email from you.  Businesses, like any other organization, need feedback.  A sense that your business is working while you're not.  Does your website have a contact form?  People are exponentially more likely to submit a request for callback or ask for more information via a structured contact form rather than sending a manual email.  Are you web 2.0 ready?  For many people, Facebook and other social networking sites are becoming methods of free-will acceptance of your business rather than traditional 'forced' advertising.