写了一半

• 支持表格共享——未登录用户也能参与编辑WOW
• 支持多人同时在线编辑WOW
• 支持多个工作表的创建
• 支持键盘操作
• 支持MS Excel、Gnumeric、OpenOffice.org Calc、Lotus 1-2-3、CSV导入
• 支持Excel(.xls)、HTML(.html)、Comma Separated(.csv)、Gnumeric(.gnumeric)、TeX Source(.tex)导出

• 没有Undo、Redo功能，解决办法是从History进行恢复
• 找回密码需要邮箱——而邮箱并不是注册的必填项——所以强烈建议在注册登录之后马上填写您的邮箱并激活。

《50 Reasons Why More People Aren't Using Your Website》, by Scott Heiferman

1. Because they don't want to generate content, they want better life
2. Because it solves a problem they don't have
3. Because it won't help them with their problem
4. Because oprah didn't mention it
5. Because everyone they know isn't using it
6. Because it doesn't let them spy on people they care about
7. Because they just don't care about what they see
8. Because nobody at work said they should use it
9. Because it's not fun enough
10. Because it doesn't make them smile
11. Because it doesn't make or save them a ton of money
12. Because it doesn't save them a ton of time
13. Because they can't think of what they're passionate about
14. Because it doesn't save lives or save the world
15. Because it's not as exciting as vegas
16. Because it sounds like a citibank ad and they hate citibank ads
17. Because nobody's waiting in line for it
18. Because they've got jobs & kids & they're busy
19. Because they've got an appointment with american idol
20. Because they're scared of the computer
21. Because they've got enough friends
22. Because they don't write well
23. Because more people are using craigslist
24. Because you don't tell them what you want them to do
25. Because nobody will think they're a loser if they don't use it
26. Because it's a thing for weirdos or losers
27. Because it's clearly something for "computer people"
28. Because someone will steal their identity or snatch their kids
29. Because they don't understand your college words
30. Because they're better at something else that you suck at
31. Because they're not good at the computer
32. Because they were born before 1985
33. Because they're shy
34. Because it doesn't work like yahoo or amazon or ebay
35. Because it's more than 1 screen to learn, unlike google
36. Because they're depressed
37. Because they don't want to sit in front of the computer
38. Because they tried to use it, but something got messed up
39. Because they've never heard of it
40. Because there's something better to do
41. Because us-weekly is more interesting
42. Because it says "tags" or "rss" and they feel stupid
43. Because a friend or family member needs them
44. Because they don't want to look dumb
45. Because they've never heard of flickr or delicious either
46. Because there aren't enough people using it yet to make it useful
47. Because there's no nudity or celebrities
48. Because it doesn't tell them why to use it
49. Because it doesn't get them sex and/or love
50. Because they just don't want to read what you want them to read

《WHY FEATURES DON'T MATTER ANYMORE: THE NEW LAWS OF DIGITAL TECHNOLOGY》, by Andreas Pfeiffer

1. More features isn't better, it's worse.
   Feature overload is becoming a real issue. The last thing a customer wants is confusion-and what's more confusing than comparing technical specifications, unless you are en expert? Only nerds get a kick out of reading feature lists. (I know - I'm one of them.)
2. You can't make things easier by adding to them.
   Simplicity means getting something done in a minimum number of simple steps. Practically anything could be simpler - but you don't get there by adding features.
3. Confusion is the ultimate deal-breaker.
   Confuse a customer, and you lose him. And nothing confuses more easily than complex features and unintuitive functionalities.
4. Style matters
   Despite what nerds may think, style isn't fluff. On the grand scale of things, style is as important as features-if not more so. Style and elegance can contribute significantly to a good user experience. But style isn't just looks, it's a global approach. Fancy packaging isn't enough.
5. Only features that provide a good user experience will be used.
   Why did the iPod catch on? Because it was so self-explanatory, and it remains the market leader in terms user experience. Sure, it may be excruciatingly difficult to make devices like digital media players or computers easy to use; but if a product is complex, intimidating or confusing, its chances for success are minimal.
6. Any feature that requires learning will only be adopted by a small fraction of users.
   Learning new features, even the ones that a user might find interesting or intriguing, is a real issue: nobody has time. Getting consumers to upgrade and adopt new features is one of the biggest problems software publishers face these days.
7. Unused features are not only useless, they can slow you down and diminish ease of use.
   Over time products become convoluted and increasingly complex to use. The frustration of not finding the one feature you need among a flurry of stuff you don't need, want or even understand, can be considerable. (Ever heard of program called Word?)
8. Users do not want to think about technology: what really counts is what it does for them.
   The best tool is the one you don't notice. Why do you think pen and paper remain vastly popular for brainstorming? Because you don't have to think about them. Pencils don't crash.
9. Forget about the killer feature. Welcome to the age of the killer user-experience.
   When technology achieves something desirable without being in your face, when it know how to integrate itself into you wishes and desires without distracting from them, that's when technology lives up to its potential. Unfortunately it's not that simple to get there.
10. Less is difficult, that's why less is more.
    Let's face it: it's usually harder to do simple things exceedingly well, than to just pile up features. The 80/20 rule applies here too: do well what 80 percent of your users do all the time, and you create a good user experience.