Take for example the margins in a book, which aid in readability and usability (by giving you a place to put your thumbs without obscuring the text). Safari 4’s tabs-in-the-title-bar arrangement is like a book with text set right to the very edge of the paper — it saves space at the expense of something useful.
Observations, Complaints, Quibbles, and Suggestions Regarding the Safari 4 Public Beta Released One Week Ago, Roughly in Order of Importance. I will say, that I don’t mind the new tabs too much, though, it took some getting used to. I definitely don’t like that I can’t just grab the tab and move it over.
Source: daringfireball.net
