From the Forbes article:
A site — IsLeaked.com — to check if your address is in the leak immediately popped up. Blogger James Watt points out that the site was created September 8, the day before the list was posted to the Bitcoin forum, and is warning people not to use it, saying it might be a honey pot to collect email addresses.
A bit late of Google to release a statement and for the press (which initially hyped the isleaked site) to warn against it.
I would’ve been hesitant to go there had I not found that I could provide an obscured address. With the ability to make a check without disclosing your full address, the possibility of it being a honeypot for spammers gathering email addresses is greatly reduced.