Currently, the search box requires the enter key to start a search. This is a bit hard to do when your device doesn't have one. We can has search button?
Posting from a Zune HD.
An alternative would be to add a search page, available via a link on the page footer. This would include a proper button, and possibly additional search options.
Isn't this only an issue if your virtual keyboard doesn't have an enter key? My phone (HTC Hero - an Android phone) only has a virtual keyboard, but that keyboard has an enter key and it works fine on this site. I guess my point is that I imagine there aren't many devices that have a keyboard and yet still manage to not have an enter key of some kind.
We won't be adding a button, but I guess I could make the background clickable (the search icon is a background-image specified in CSS).
edit: I view this as a problem with the browser on that platform, not our problem. If the iPhone browser can handle this, the Zune / Blackberry / etc browser should be able to, as well.
edit: see that Android already followed Apple's lead here, so this really is a platform issue as I said: How to use the Search box on these Stack Exchange sites with the Galaxy S?