You might as well put a "buy the dead tree version" link on the site - it's a potentially useful resource for start ups to buy and put on the shelf, and it might make you a few extra quid?
I'm 100% on http://bipsync.com (as I have been for the last year or two), a startup initially targeted at Hedge Fund analysts and other professional investors. We were lucky enough to raise a seven figure seed round, so have had the time to go through quite a lengthy customer development phase with some reference customers to really nail the product-market fit. We'll have a public beta out later this year.
What are you working on now?