And another one :D You're like the 5th person to post this here.

Referral links are not allowed in the community, and if you choose to post a link, please be sure all referral codes have been removed.

guidelines

I'd say you're better of sharing it to /r/STeam (that's www.reddit.com/r/steam) or perhaps /r/france?

but not here

Then maybe not a scam .... Thanks Kanathene.
I still remain cautious now.

You're either the 4th or the 5th user posting this, I lost the count... but you're the 1st to say that the offer is limited to France, and the 2nd to say that you'll gain something from it as well.

That said, you should close this immediately, if you don't want to incur into a suspension for violating this rule:

Referral links are not allowed in the community, and if you choose to post a link, please be sure all referral codes have been removed.

cya :3