Although you can\‘t see a cursor when you click on text in Safari, it seems that one might be there. If you click on a position in a line of text in Safari, and then Shift-click somewhere else in the page\’s text, it will select all of the text from the first place you clicked to the place you Shift-clicked, despite the lack of a visible cursor.

This makes selecting really big clumps of text a lot easier, as you can drag your scroll bar to get from one end of the selection to the other, rather than dragging the cursor and waiting for it to autoscroll. Just be sure not to click anywhere on the page between your first click and the Shift-click!

source: http://www.macosxhints.com/