Free WIFI in Taiwan

In Taipei you can probably reach free wifi spot easily, but what about other cities, places in Taiwan?
Well, recently we discovered, you can have 90 minutes per day just in 7- Eleven.
How? Start up your laptop in 7-Eleven and go to website: http://www.7-11.com.tw/event/127wifi/index.htm. Create new account adding your cell-phone number and password. Enjoy free internet :)