Just figured it out that it's pushed by Handcent since
the stock sms app doesn't have the notification.
I was gonna ask if you had Hancent, but I assumed since it was you that it was a real message
I was saddened when Handcent went ads. Part of me is debating trying to find another text app. Having it all in Hangouts is way too much.
I uninstalled it and I'm now using the stock messaging app and it just started
doing this after the last Handcent update.
I hate it when they start pushing ads. I would pay a few
bucks if they had an ad free version.