You can make a selection by clicking a radio button, but it’s also nice to receive very obvious feedback as shown in this video. The example comes from the Eurostar website which has improved dramatically in recent years. Note: This video clip has no sound.
Highlight large area when making a selection from Alex Poole on Vimeo.
I think about the person who allcatuy re-designed it. My guess is he or she is happy that you noticed his/her work, since most people won’t and just slap the sticker on without looking twice!