sadly, a great deal of our society is built on trust.
THAT'S the problem. Newbies will trust their
breeders and not question them. Although MOST
breeders are trustworthy on here, there are some that aren't. Many of us started out and we went to our
breeder for EVERYTHING. We fully trusted them and didn't doubt what they said because they'd been breeding for years and we were just newbs.
The problem with that is that if a
breeder doesn't list their lineages in their ads and they're working with a newbie then they could easily just tell them ANY lineage and that newbie would believe them.
I've seen it happen time and time again where newbies would finally get their dream glider, such as a leu, and the lineage they were given looked pretty darn good and they were excited. Well, then the time comes that they've got joeys of their own and *WHAM* they're told that their lineage if horrible and awful and that their glider needs to be neutered/retired.

I think that if lineages were required to be posted in ads, then we, as a community, could keep a better eye on things and be spot incorrect lineages BEFORE someone gets hurt! Also, as I said earlier, I think it would encourage more
breeders to use the databases as well, which would also help to keep things straightened out.
A bit off-topic: I was just browsing the database(trying to pinpoint where the leu gene supposedly came from in the Mother White line) and stumbled across this lineage...
http://www.thepetglider.com/pedigree/modules/animal/pedigree.php?pedid=4144That is yet another example of a lineage that doesn't look questionable at first-glance and, to a newbie, they wouldn't question it and would probably pair that leu girl up with a leu het to produce more leus. However, upon further inspection you can see that the mother is actually from sterile mosaic lines. :\
This month has just been a big eye-opener for me about just how much we, as a community, need to help bring about changes and how we need to set higher standards for our
breeders.