It depends on how you want to market your business. Ideally, you would like your Fan page to drive business to you/your website. My recommendation is that you use bit.ly to shorten the URL (although Facebook typically shortens it for you and I'm puzzled why they didn't this time). The following are some items you might keep in mind as you market your business, as well:

Create a LinkedIn page for your business. You can link to both Facebook and Twitter at LinkedIn, and since the objective for LinkedIn is professional as opposed to personal networking, more people will find you.

Create a Twitter page for your business. Update it daily (optimum) or weekly (bare minimum) with your current projects, thoughts on the VA industry as a whole, lead generation, anything that is pertinent to you on any given day, and any email marketing you may be doing. People will find you on Twitter, although it would be interesting to search and see if any other VA's have Twitter pages.

Post your Twitter link on your FB fanpage since Twitter will send any update on Twitter to your FB page (reducing the need to post things twice). Link both your FB and Twitter to LinkedIn, so more people can find you.