How do you find blogs/forums that use the Facebook plugin?

[AngryFiver]

Is there an advanced Google search I can do for this?

 

[bauss]

For comments yes, they're indexed.

 

[vgeek]

https://search.nerdydata.com/
https://searchcode.com/

 

[CPR_dummy]

What are you going to pitch these people?

I do something similar.