Unfortunately I've downloaded and tried it in my Snow Leopard VM - the address/search and search fields cannot be typed in when clicked. The fields don't get either the active text field border or a blinking cursor. Weirdly, when I typed (and failed) in the search field, a box opened beneath showing the results of my typing and asking which search engine I wanted to use for the search; but even then, nothing happened. It's not a VM issue as Firefox (48) worked fine.InterWeb has become my go-to on Snow Leopard, it seems to have the best website compatibility.
InterWeb does work fine in Mavericks however.