Is it Legal for MoveOn and Obama Staffers to Work Together?

I thought that MoveOn couldn’t work with Obama without running afoul of campaign finance laws? Thinking this, I found this e mail rather interessting:

Dear fellow MoveOn member,

My friends tell me I’m addicted to politics. But I live in Oklahoma, one of the reddest of red states, so even though I’m glued to the news, I’ve never felt like I could do very much.

Last week, that changed. I got a MoveOn email inviting me to drive to a swing state and volunteer. My husband and I jumped at the chance, and signed up to drive to Missouri.

I can tell you firsthand: it feels great to be on the front lines. It’s energizing and humbling at the same time. And when you talk to undecided voters, you realize what a difference you’re making.

My husband and I are going back every weekend until the election. Could you join us, by signing up to drive to a swing state to volunteer for Obama this weekend? The Obama campaign particularly needs volunteers in Philadelphia, Pennsylvania this Saturday—so if you can, please click below to sign up!…

…Our 10-year-old son is the love of our life. We’re trying to do everything we can for his future. It’s so important to us to get Obama into office instead of McCain—for his sake.

My husband owns a small painting company here, and rarely takes a day off. But this past Saturday, he dropped off our son at my mother-in-law’s house and drove with me to an Obama office in Missouri. Everyone we met was really nice and kind. We met other MoveOn members and Obama staffers, and then went outside to knock on doors and meet undecided voters.

One older woman we met hadn’t decided whether or not to vote. But it meant a lot to her that we’d come all that way just to talk to her. By the time we left, she seemed like she’d made up her mind to vote for Obama!…

…Thanks for all that you do.

–Tamika Sumner, MoveOn member

Tahlequah, Oklahoma (emphasis added)

Doesn’t this sort of thing constitute an in-kind donation to the Obama campaign? Nothing in the email about helping anyone other than Obama (for the children, of course). Anyone out there expert enough in this area of law to render a judgement?