As a smallish 10 man casual raiding guild, my guild tends to find itself having to pug a person or two for our raids when we don't have enough people sign up/show up for our raids. Now this doesn't mean that we are a horribad guild that couldn't down hogger or anything. It just means that recruitment has not brought in enough people who can show up to a raid. A normal raid night this expansion will often see us with eight or nine guildees online and ready to raid.
This situation leads us to pug a spot or two so that we can raid on raid nights. Sometimes I have a friend on my friends list that I can ask to come to the raid and when this happens, it's not really pugging as you are pulling in someone you know and not a complete stranger. But sadly there are times when our friends list fails us and we are stuck having to resort to asking for people in trade chat. This is not something that we enjoy doing but sometimes it's either pug or not raid.
Speculating about Class Halls
3 days ago