google_ad_type = "text_image"; line?

[JohnKelly]

I've noticed that with the last rollout of changes, an extra line of code has been added to the AdSense javascript:

google_ad_type = "text_image";

Is it necessary to add this line to all older AdSense code, or only as new code is generated?

Has anyone noticed any difference by including it or leaving it out, perhaps in CTR or EPC?

[piplio]

i thought you are not supposed to modify the code?

that's probably the image ads? images ads are PPC and CPM from googles. though, CPM is in nickels.

[RonPK]

The line has been around ever since they introduced image ads, sometime last year. No need to change old code: if not set, the value defaults to "text".

[JohnKelly]

Are you sure it defaults to "text"? I would think it would default to whatever option was selected in the Ad Unit setting.

[RonPK]

What I meant is that when there is no line defining the google_ad_type in your script, the ad server will serve a text ad.