Yet, as I posted yesterday, its removal from the policy pages did not mean much in itself, as the AdSense terms still included a clause (If You have elected to receive content or Site-based Ads, You further agree not to display on any Serviced Page any non-Google content-targeted advertisement(s).) that would prevent other contextual ads on the same page.

I followed up with Google on the situation, to find out of the removal of the clause would mean that competitor's ads would be allowed on the same page as AdSense, provided they didn't resemble or mimic AdSense ads, and that the AdSense terms would eventually be updated to reflect this policy change. And the answer is yes!

Don't' get too excited though, because Yahoo is still saying no to other ads on the same page as theirs.

Using Yahoo Publisher Network is still a no go, because the YPN terms still contain a clause (For any webpage or RSS feed that includes the Ad Code, you agree not to display or link to any other advertising (including but not limited to any listing) that is mapped to or responds to the content of the Ad Page) preventing publishers from using another contextual ad network on the same page as YPN ads.

Update: I spoke with Yahoo Publisher Network on this issue, and they say that as of today, page level exclusivity still exists. This means you still cannot run YPN on the same page as another contextual ad network. However, they will listen to publisher feedback on this issue and take it into consideration for future YPN terms updates.

My first thought after hearing this news was what's the catch?! Google always has a catch!

And any other contextual ads are now fine to run, provided their own terms do allow other contextual ads on the same page, and they do not mimic the AdSense ad units on the page you currently run.

There's the catch I thought. They're going to say that some networks are mimicking their look, but upon further reading Jenn explained more.

If you are using the border-less technique, the simplest solution is to add a border or change the background color of the competitor's ad unit. It is still unclear just how much of the text within a blended ad unit (an ad unit that matches the border and background to the background of the webpage) would have to be changed, but I would guess all three elements would need changing, the colors of the title, description text and the URL.

I advise reading her whole post at JenSense: It's official! You can now run AdSense on the same page as other contextual ad programs