Forum Moderators: martinibuster
You are indeed allowed to rotate AdSense with another competitor on your pages. The policy about competing ads wouldn't apply in this case, as you're not showing the AdSense ads at the same time as the competing ads.
Regarding alternate ads, you're welcome to place other content-targeted or text ads as your alternate ad selection as well. I think the only issue - and this doesn't just apply to alternate ads, but to the entire web - is that any ad you create yourself can't look like a Google ad. If you're in doubt as to whether your alternate ad is acceptable, the AdSense team is always happy to have a look.
ASA.