What are net margin and other profitability ratios of your startup, and what is your business model?

Financial ratios are well known for big companies, like Microsoft or Yahoo!, while remain pretty unknown for small startups. However, as recent Xobni's post on P/E ratio, has learned, it would make a lot of sense to apply financial ratios to startup's world, to at least check what you can expect etc. So, what is your net profit margin, and other profitability ratios, and what is your business model?