I tried to leave this as a comment on the related article on allfacebook.com, but apparently the author of that Blog is not in the habit of approving comments that highlight his overly sensationalized coverage of these topics. After waiting four days for the comment to be approved, I’m just going to post it here (maybe he’ll approve the trackback):
Android has yet to prove itself as a mobile platform, any investment in an application for it is a risk at this point and must be weighed by a business considering development as such.
This is probably the real reason Facebook has not invested in it. Granted, I’m speculating here, but no more so than Nick is above when he says this is about bad blood between Google and Facebook (as long as he provides no references to back that claim up).
The iPhone, in contrast, was an established mobile platform with a larger userbase by the time Facebook was even able to build an application for it. Not to mention the iPhone Facebook app isn’t that useful. I still find myself switching over to the mobile version in Safari, or even the full version.