Questions on asking for reviews

I was wondering, are you allowed more than one thread requesting reviews/review swaps? And if not, is it considered bad forum etiquette to revive your original thread and ask for more? Finally, say you've done some minor editing to older chapters, and added around 10 more chapters to a story. Would this be considered enough progress to ask for a new review/review trade?

You can ask for a review more than once but I would recommend adding a substantial amount of chapters each time you ask for one. Maybe 25 or so. Or at least wait 4-5 months between each. Also if you don't have the time to write a review ask for one instead of a trade. You may have fewer people willing give you one but you don't want to make a promise and not follow up on it. Someone will give it a read.