Rejoice! For you have learned a valuable lesson! Next time, first look how well the competition is doing before coding up the same thing. As for why vertical

Rejoice! For you have learned a valuable lesson! Next time, first look how well the competition is doing before coding up the same thing. As for why vertical tabs are not popular: for me it's because it is annoyingly similar, and right next to, the navigation pane of the website I'm looking at. This leads to clicks on the wrong "navigation pane".