Regarding keyword spamming, I just noticed something that was issued by eBay but may conflict with their own rules.

I'm sure most sellers received the "Chrismas is Coming" article regarding tips to improve selling. This was stated:

Maximise your item title

Include keywords that buyers will search for, unique or descriptive attributes, and always check your spelling. Your item title is critical in helping users find your items, so use each character wisely.

That is what was printed, word for word. Seems to contradict eBay's keyword spam policy regarding descriptive words. However, D*G may prove me wrong here.