When you read Adsense TOS, what troubles you most?

[TimeIsMoney]

When you read the google adsense terms of service, which points trouble you most? Hope i dont get banned for this :(

[rewlie]

"but not limited to"

[real]

Not participate in link schemes (including exchanges, advertising?)
Place ads on indexed pages (what if not indexed yet)

[tonyinabox]

"In addition to the standards above, AdSense participants are required to adhere to the webmaster guidelines"