Ok, does anyone know what the differnce between the exclusive, & the free banner ad is? & what the free banner ad is for.

For the life of me I can't figure out what it's for. & not sure where to upload my banner to my texture pack at, I'm guessing at the exclusive banner upload, but what about the free one?

If somoene could help me, I'd appreciate it.

Thanks
-Jaden-