Is your product of use to companies as well as individuals? If so you may be able to produce a "company" account at a much higher price point, offering the same functionality but with extras such as multiple logins, Google Apps integration (which provides SSO for free for companies that use Google Apps) more logging, usage reports and more.
Also consider patio11's favourite trick of offering people a 10% discount if they pay for 12 months up front - this can massively increase your cash flow.
Nope, it is consumer-oriented only. There's not even a remote chance a company want to use it :)
Cash flow is not an issue. While not everybody pays for 12 months in advance, I do offer that option and some people use it. The disadvantage would be that there are legitimate reasons to NOT use my service a couple months per year and come back later. So by offering a discount for 12 months up front, it might lead to more people asking for refunds or general customer dissatisfaction. I could think about a service-branch that fills these couple months off, but generally speaking, it also increases perceived complexity.
You got me thinking, but I'm reluctant, because it's not as easy as writing that email patio11 recommends :)
Also consider patio11's favourite trick of offering people a 10% discount if they pay for 12 months up front - this can massively increase your cash flow.