You can now write and modify a review online from the review admin without it being displayed on the public list.
Underneath a review you'll find a checkbox which controls this
In the admin list all reviews which names are in red are reviews that aren't published yet.
Why?
Now you can write a review. Uncheck the box. Let the review board or the companies read it by using http://www.allaboutsymbian.com/software/reviews/review2.php?id=<id of your review (check when hovering over it in the admin list)>
When the review is complete you just check the box and it will displayed on the frontpage and the reviews listings.