Exactly. So, unless one really dislikes iPhoto, it will be hard to push Picasa to Mac users. Some will use it for sure but there's a big barrier to entry (which

Exactly. So, unless one really dislikes iPhoto, it will be hard to push Picasa to Mac users. Some will use it for sure but there's a big barrier to entry (which is not without reminding of the case of Internet Explorer on Windows...)