What is Blogger in draft?
Blogger in draft is a special version of Blogger where you can try out new features before they are released to everyone. By taking your feedback and looking at what works and what doesn’t, the blogger team will be able to make features that much better when releasing them to everyone.Make sure that you sign in to blogger in draft mode by using the specific URL draft.blogger.com instead of the usual www.blogger.com. You can also permanently select the draft mode by ticking a selection box on the dashboard page.
When you have the compose window open, move your mouse to the bottom right of the box (just below the Show all text). Your mouse pointer will change when you hit the resize button. Click and drag the window down for a bigger view.
This trick only works for changing the window size vertically. If you want to increase the window size horizontally you should look into a grease monkey script (a Firefox add-on) that will size the window to the maximum. You can download and install the script via the userscripts.org website. The exact URL for the script is: http://userscripts.org/scripts/show/30112
