Clicks, unlike a page content, are visitors’ contribution. So don’t build obstacles but make clicking as easy as possible.
Bad: clickable is radiobutton only, the circle.
Better: the text label is clickable too.
Best: the whole block with the radiobutton and the text is clickable.
Below is a list of two courses, it is assumed a visitor should select one to continue:
For some reason clickable is the text only.
Better: the image is clickable as well. It is much faster and easier to click there than on the text.
Best: rectangle with the image and the text is highlighted onMouseOver and clickable.
The same we can say about check-boxes, icons, buttons. Don’t force your visitor to be a sniper, make it easy to click!
If a visitor haven't filled in your form properly then don't punish but help with handy form validat...
Possibility to reload a time-sensitive chart or a table without reloading the whole page is importan...
Some people don't like tests...or want to add some fun to your life.