If the cable news channels want to know what stories test well, they need look no further than the mediabistro lunch table. The talk among the 20-something, mostly female group today was not flooding, or congressional testimony or the presidential race. On this Friday, it was the Mass pregnancy pact. As lunch wound down, the group stopped by the world HQ of TVNewser (two desks and three monitors) and watched with interest as FNC and MSNBC simultaneously reported the news (CNN aired a segment about 10 minutes later.) It’s one of those stories that generates discussion, even debate as it did today at mediabistro.com. And on a day like today, it’s a story that fuels the cable news networks too.