What's your favorite online office service?

Are you still using MS office? You are behind the tims:). Today,there are many of online office services,e.g. Google Docs,Zoho App etc.Google is a sophisticated online docs services,it's fast,fixable and easy to use.but I like Zoho much more,the reason is it's more like a real office,and it has many of service except docs,you can find more useful app servies on Zoho,for example,you can may your Project,or hold an online meeting etc.Recently,Zoho release a new feature,you can use online docment much like use an office2007 suite.Great job! Today,a new member of them is publiced,it's 'thinkfree'.it's another onlince docments service for you.let's try it.Of course,if you are a newbie of them,and you have a google account,you are luck,becuase you can use your google account sing in them,don't need register individually.