Here's their reasoning in the change (from FaceBook):
I recently installed this Facebook Like plugin for my website.
When a Facebook user 'Likes' a brand, a notification is posted on
Facebook like thumbs up
Within one week, Facebook Like had been implemented on 50000 websites.
If you're logged into your Facebook account, you can give a thumbs up to any
a chimpy take on the Facebook 'Like' thumbs up icon.
The Facebook Like Button is not Viral
facebook like · monkey like · thumbs up · icon · like button
I'm drawn to it like a magnet to metal. facebook1. Facebook, in my book,
networking concept of the thumbs up "like" button found on Facebook,
Most people by now have seen the “Like” button — that little thumbs-up icon
Funny You like this, Facebook thumbs up shirt. Please click on my store for
Unlike FriendFeed's like button, Facebook will sport a thumbs-up sign
Fun facebook t-shirt with thumbs up icon like on facebook. U like this!
The ubiquitous “like” button, that little thumbs-up click that symbolizes
After the first week, Facebook announced it's “Like” button, the powerful
facebook like · monkey like · thumbs up · icon · like button
Suggested this Like / "Thumbs Up" feature in October.. and the tech
Of course, Facebook doesn't have a Dislike button, so it's not entirely like
