Skald's Vigor- Is it as awesome as I thought, or just really awesome?

[Brom the Obnoxiously Awesome]

So, short and to the point:
First off; ACG!!!
And second off, does the Skald's Vigor feat effect everyone who is under the raging songs effects, or just the Skald? Either way, the feat is awesome, I just want to know if it effects everyone, because if it does, that's really great, and could replace clerics on a party.

[Splendor]

Skald’s Vigor
Your song and your enthusiasm combine to invigorate you in battle.
Prerequisites: Raging song† class feature.
Benefit: While maintaining a raging song, you gain fast healing equal to the Strength bonus your song provides, starting in the round after you begin the song. If you stop maintaining your song, the fast healing ends, even if the effects of your song persist.

I don't see where it says it affects your allies.

[Nocte ex Mortis]

It's awesome. Then, you take Greater Skald's Vigor at 11.

It's SUPER-awesome. I love me some Skald outta this.

[Brom the Obnoxiously Awesome]

Dang...
That's what I figured. It's still a really great feat, especially at level 1, but...
Not quite as sweet.

[Nocte ex Mortis]

It becomes amazing at 11. Like, jaw-droppingly amazing. Especially when you're giving everyone +4 or better to Strength.