A few weeks ago, I read a blog post about a way to reduce clicks/touches when selecting items from expandable menus:
The most common behavior is touching an icon to open some menu, and touch again on the item you want to select.
The blog post I read supposed to offer a "fluid" way to interact with the menu: The menu would open on when beginning to touch, and the selection of items would happen when the touch gesture is finished. By making this simple change, it's possible to open the menu and select an item with only one touch gesture, while still offering the common two-touch selection method. An online example of this can also be seen here.
We are developing a mobile version of our web application, so I'm interested if there are any drawbacks of using this? In what cases should this not be used?