Ask HN: Should users be made to fill a form before downloading?

Hi,<p>I have a dilemma related to the free download version of the my startup's software (www.graphitecharts.com/download). We are a silverlight based charting library with an aim to support WPF and Windows Phone 7 in the near future. I know most people here hate plug-ins but our aim is to focus on intranet and extranet applications and sites, and eventually support sharepoint and possibly excel.<p>We launched on 22nd march 2011, that's the date I officially announced it on twitter and posted it to the visual studio gallery. We haven't had any sales yet, but we do get around 5-10 unique visitors a day from the visual studio gallery and google. 2 out of every 5 people who visit the site do download the free version. We have had around 50 downloads so far. The problem is I have no way to contact these people. I do not force them to fill any forms and but there is an optional comment form below. This setup stems from the fact that I personally get annoyed when I have to fill a form to try something out. I also hoped people who are genuinely interested will email us back on their own.<p>Problem is its not working. No one has filled the form and no has emailed us back. Its still early days but charting is hard (the first version has taken 1 year to build) and I would love feedback from users before I start working on the next version. So do you think I should force users to fill a form ? I will explicitly state there that we might contact you to ask for suggestions etc. in the future.<p>Any thoughts on this would be really helpful.<p>ps: I know the site needs a lot of work, so be gentle, but any feedback is welcome.<p>thanks, Anuj.