As suggested by JimmeVE, this thread is to discuss the guide I wrote over the course of a few hours on YTong nests, the guide itself can be found here;
http://www.antstore.net/viewtopic.php?t=5737
Here you can ask any further questions on it, and make suggestions for things to add/remove/change in it.
The reason for this seperate thread is so that the guide can be stickied and locked to keep the guide neat & tidy without being "spammed up" with replies, so that all of the information is in one post and people reading the guide don't feel they have to read through an entire thread of replies to get all the information they want.
So please, if you have any comments on the guide, or better yet if you have any questions to ask about buying, preparing, or maintaining a YTong nest that is not covered in my guide, then please ask away here and maybe we can add the information to the guide to help other Myrmecologists out.