A button is something that seems to be made just for mobile: it’s designed to be big and easy to activate, as opposed to small and harder to activate, like normal text links. This seems ideal for a mobile devices, which have a small display area and whose form of input is a person’s (relatively) fat finger interacting with the screen. Contrast this with the desktop, where the display area is much larger and the input device, the mouse, is a much more highly refined and sensitive pointing device.
But you probably don’t want to make everything into a button. After all, there’s still a place for good old fashioned anchor tags. So what do you make into a button? Simple: areas of your website that get frequent usage. For instance, [mobile.twitter.com] has buttons for Search, Refresh results, and More (display more tweets), but leaves other things as anchors/hyperlinks, such as usernames and links in tweets. Basically, use common sense. You should have a mixture of both buttons and hyperlinks.
There’s a distinction to be made between form input buttons and other things that look like buttons. The former occurs within a Form tag and can be used to submit a form of data when clicked (and you can [style it up all you want]!). The latter is simply an Anchor tag disguised as a big clickable button, which is the focus of this article.
A button can be a very useful thing, and can make the user experience much much better. Yet it’s surprisingly easy to fail to create a proper button.
How to fail at creating a button
See if you can tell the difference between these two buttons: