Browser Wars: IE and Opera in decline

Latest stats from ars technica:

• IE ........... 66.82%
  
• FF ........... 22.05%
  
• Safari ........ 8.23%
  
• Chrome ..... 1.23%
  
• Opera ........ 0.07%
  

These numbers (quoted to 4 sigdigs) don't sum to 100%:

> sum(66.82,22.05,8.23,1.23,0.07)
[1] 98.4

according to R. Caveat lector!