TWC hasn't had a good, meaningful slogan since 1998. As much as I loved the Live By It era, I never understood what "Live By It" meant. Live by what? TWC?
Live By It was my favorite era as far as slogans go. But how don't you understand it? They were trying to say everyone lives by the weather, so everyone should live by TWC.
One of the things I liked the most about it was it's versatility. Depending on the season or outdoor activity they were talking about, they could alter the slogan. For example, in a golf spot, use "Golf By It," etc.