Until aistear.ie came along, there was unfortunately no website available that discussed good writing in Irish.
Even though aistear.ie is now there, there is no harm in mentioning a very good printed resource, a book that deals with good written Irish, by Ciarán Mac Murchaidh, lecturer in Irish in Saint Patrick’s College, Drumcondra, Dublin.
The publisher is Cois Life. See the following link:
Cruinnscríobh na Gaeilge - Cois Life
A CD-ROM comes with the book too.
The book is regularly updated.
This book is always in demand and is highly recommended. It can be bought from booksellers or on-line from www.litriocht.com.