I'm a regular user of Google Calendars, and just over a year ago, they announced "interesting" calendars that you could add to your calendar. I find it helps me know when I am missing matches because I'm at work. For following an English or Scottish club playing in Europe, you need to select four calendars, one for the league, one for the cup, one for the league cup, and one for the European competition. It is interesting to note the range of leagues covered, as well as some omissions.

They include calendars for teams like Oulun Palloseura in the Finnish second division. They recently added the mens' friendly calendars for select national teams (including the US and many European teams.) What I find is a curious omission is that they don't have a calendar for UEFA 2012 qualifying. Are there other teams you find missing?