Which is probably why Facebook’s presentation on Saturday morning was completely full–there wasn’t much else going on. I didn’t get in myself, but I got the gist: Facebook is rolling out its Facebook Connect network/platform/connecty-thingy to Apple’s (AAPL) iPhone .

But I don’t quite get what that means. I suspect that’s because, as with most other technology rollouts/news/announcements, etc., trying to divine the impact 30 seconds after the fact is pretty pointless. You need to see how this stuff is actually used in real life. That can take days, weeks or months to figure out.

But Charlene Li, who gets paid to tell people what this stuff means, helped me out: It’s an incremental step toward social networks’ inevitable migration to mobile. That was easy!

Li, the former Forrester social network analyst who has hung out her own shingle at the Altimeter Group, didn’t make it into the Facebook event either. But after it was over, we walked into the room where the event had been held and talked about it. Meta!

We also got a brief cameo from an Austin Convention Center employee. If you want to skip that part, head straight to the 45-second mark in the following clip. But we got a giggle out of it, so in it stays.

Brokaw had pretty good info. Meebo users are now able to work with Facebook accounts again. Here’s CEO Seth Sternberg’s message to his users:

Good news!

Facebook Chat is back.

In my last blog post (linked), I told you we were removing Facebook for a little while in order to incorporate a new way of connecting to their network.

After some hard work from the folks here at Meebo and help from a whole host of people at Facebook, we now have Facebook back in Meebo.

Plus, Meebo is now the first launch partner of the ‘alpha’ version of the Facebook Connect + Chat integration. That’s pretty cool.

The method for connecting is slightly different than the other networks on Meebo, but it works basically the same way. You can login to Facebook from the front page or, if you have a Meebo account, login with your Meebo username and add Facebook as a network account from inside Meebo.

Thanks for your patience while we were getting Facebook up and running again.

We hope this helps you keep in touch with all your Facebook friends!”

Last week Mark Zuckberg’s company sued Power.com, a social network aggregator, because the company allowed Facebook users to plug into the site without actually visiting Facebook itself. Today, instant-messaging aggregator Meebo is unplugging itself from Facebook.

No idea if legal threats were brought up in this case, but the parallel seems pretty clear: Facebook will offer outside sites access to its user base, but only on its own terms.

In both cases, Facebook wanted the would-be partner sites to use its recently launched Facebook Connect service. Last week, Power.com founder Steve Vacahni told me that he and Facebook had “resolved” their issues, and that Facebook’s lawyers had told him the suit would be dropped shortly. But as far as I know Facebook has yet to withdraw its complaint.

Which has probably served as an effective warning for Meebo CEO Seth Sternberg, who sent out this memo to his users tonight:

Hi Meebo,

Got some bad news.

As a bunch of you already know (because you’ve been using it), we recently added Facebook Chat into Meebo.

We have been speaking to the Facebook team, and it turns out, they’d like us to connect to their network in a different way. In the interim, they asked us take Facebook off Meebo, and we said ‘okay.’

However, we were glad to hear that the Facebook team was genuinely excited to see their network on Meebo, especially since they already have plans to open Facebook Chat. They also committed resources from their Chat and Facebook Connect teams to do extra work with us to get Facebook Chat back on Meebo ‘really, really soon.’

Work began this week, so stay tuned. We expect some all nighters on both sides!

Seth

P.S. Meebo grew in December. We reached close to 45 million people, a new record, including 2.5 million via Meebo Community IM. So it’s not all bad news… “

Update — here’s comment from Facebook:

We are excited to be working with Meebo to implement Facebook Chat using Facebook Connect. Their current integration was launched without meeting the policies we have in place to assure the trust users have established on Facebook is maintained when they interact with their Facebook friends around the Web.

We announced our plans to open Facebook Chat to third-party Websites in 2008 and are working closely with Meebo to create a great experience for Facebook users that use their service.