Non-Standard Social Icons

I’m guessing it isn’t as important if a site uses a

You
(Tube)

logo instead of

You(Tube)

as long as it links to youtube.com

- BUT - there would be a big problem if a

Yoo(Tube) logo was used to link to yootube.com

In other words, even though you might be diluting their brand recognition, as long as it is representing them they look the other way. But if you are using a version of the logo to misrepresent yourself as them or capitalize on their popularity, they would take action.