So Proctor and Gamble is doing a McDonald’s? They are inviting 15 so-called “mommy bloggers” to their corporate office.

One of them is MIndy Roberts, a mother of three. She calls her blog, Wonderbelly, a chronicle of “life and children in the sleepless hours in an effort to capture her young family’s world in real time.” Roberts is also the author of Mommy Confidential.

P&G seem to have done their homework in making their pick. “Metropolotal Mama” Stephanie Sheaffer, is another in the group of invitees. She says she works in the PR industry by day and blogs by night.

The Golden Arches did something like this around this time last year. Creating an advisory panel was a good way to counter the kind of flak they were getting from some quarters —and bloggers. Today Blogger Relations is becoming standard PR practice with lots of advice from the pros.

What does this tell us? It signals that bloggers are quickly becoming part of the media mix, rather than a group that only exists on the edges.