So Google launched its spreadsheets, I managedto getmy invitation and they are pretty sweet. Same as editgrid, irows, numsum and others out there… they are all sweet 
Cool stuff:
- It has most of the functions you’d probably need.
- Ctrl+Key copy, cut, paste, bold, underline, italic.
- Ctrl + arrow navigation and Ctrl+Shift support to move across written cells.
- Multiple sheet support
- Built in colaboration chat!
- Undo/Redo
Some premature observations:
- No ODF export/import?! (it should be a matter of time)
- When inserting a formula “=sum(” you have to click the referenced cell, you can’t use the arrow to move to it, cause you are focused inside a textfield so the arrows will move the cursor inside the function name “=su|m(, which sucks.”
- No borders. You canadd background and foreground colorsto your cells, but there are still no borders, which are quite important to differentiate results from data
- Horrible URLs
- Slow javascript, I didn’t feel so much lag on editgrid
- Horizontal cell merge, but now vertical merge
- No graphs
