I actually just saw a Hillary ad the other day around noon at my work gym
She is working to rack up the margins.
Very smart. Ad spending is most effective when its unopposed. Sanders is just going to let Clinton walk all over him in the South.
For what it's worth, I checked PoliticalAdSleuth to see the numbers just now (since the announcement was made several days ago but the ads hadn't been purchased yet).
I couple of the FCC links were broken, but from what I could see, approximately $34,000 in airtime has been purchased - almost all of it in the Macon media market - which, save for Atlanta, is the only media market in the state that doesn't have at least one-third to one-half of its audience in other states. That'll get her some exposure in said media market, but...she's not really reaching saturating the state or anything - or even Macon. For her to play in ATL would cost at least ten times that for any sustained period of time.
I would have thought given those petty expenditures, she would have bought at least a few ads in the Chattanooga media market. Probably 80%+ of it covers North Georgia and Southeastern Tennessee and it's a media market 50% larger than Macon's, but there aren't any that I saw.
Georgia's a big state - geographically and otherwise - and making a $34,000 ad buy in a media market that reaches potentially less than 10% of the state's households isn't really anything serious.