Sorry to disappoint on the firefox front, we'd love to support it and we will as soon as we can, but we're a small startup and sometimes we need to make tough decisions about where we spend our time and resources. We'll get to it!
You could at least let me look at the site with a warning that my browser is unsupported rather than blocking me.
I can understand the view that this would make you look worse, but my personal response is that I don't want to give your tool a second chance because of the annoyance (if everyone says it is the best thing since vim, of course, I'll get over myself and look :P).
If it was truly broken in Firefox I would've been curious enough to try it in Chrome. Sorry.
Right now, being blocked like this, I'm assuming by default
- You sniff the UserAgent (didn't test) instead of using feature detection
- You're basing a product on non-standard web technologies and will, like Google does, later provide 'Please UPGRADE to Google Chrome' (emphasis mine) links all over the site, as on this FF landing page.
Worse: There's no introduction to the site at all. So the topic says 'Mobile Mockups', but I don't even see an about page, some introduction stories, images or whatnot. I end up with a bullshit message that tells me to install a different browser for a product that I cannot check out without doing just that.
There's not much room to present a product less favorable.
Please please please don't require a user of some sort to submit feedback - I don't need another set of credentials for this and you don't want more friction for users who want to help you out.
Also, please add tooltips for various icons - they aren't all self-explanatory.
Thanks for that - we wish anonymous feedback was an option - we use Get Satisfaction, it's a great service but it does require some form of sign in. We will keep your feedback in mind and maybe there are other things we can do.