What this really means: TV is grabbing a share of online advertising by redefining TV as both broadcast and broadband. Advertisers have always been more comfortable spending big money on TV. Now they can continue to spend their money with those familiar players and get broadband, too. And TV is doing this so as not to lose money to other media even as broadcast — and next, cable — shrink; this is how they rescue upfront. And if TV succeeds at holding advertisers’ attention and money, other players — online companies, magazines, newspapers — may not be able to break in. This an effort for both networks and ad agencies to keep ahead.