I think that landing page needs to change. I mean my comments in the most constructive way and I want to see competition and companies like Zoho compete.
The marketing copy on the landing page right now sounds a tad defensive and like they are trying to prove something. They have NOTHING to prove, because just like they say, "you have most of the familiar functionality found in Microsoft Office, ... other things Microsoft Office doesn't offer, like the ability to easily share and edit documents online... use it for free."
You NEED to make an acronym out of "FAKE Office"... I can't think of one right now, but even Free Ass Kickingly Effective Office would be a start ;)
Run an entire campaign on this like a politician, seriously.
First, the top banner needs to be changed, because the emphasis needs to be more positive "Zoho the Free Ass Kickingly Effective Office that Microsoft doesn't want you to try" (with the f,a,k,e, emphasized some how).
ALSO, you can take Microsoft's quote out of context: They said "we're not seeing any inclination that Zoho or Google or Zimbra or any other of those offering fake Office capabilities can replace [Microsoft Office]," he [Ron Markezich, corporate VP of Microsoft Online] said.
So in the copy, quote them! Microsoft's VP of Microsoft Online said "FAKE Office capabilities can replace [Microsoft Office]."
Make a comparison chart with Office that matches check for check what Zoho offers and then the one-sided Zoho checks for FREE and the ability to share and edit online.
Remove your line of "you have most of the familiar functionality of Microsoft Office".
This is just a start and I would be more than happy to pitch in and help and I'm sure the rest of the community wouldn't mind lending a hand too ;)
Aggressive tactics, but all's fair in love and war.
I heard some companies have made it big off "dont be evil"