I just finished migrating a high profile site with about 150 MB of textual content from a WordPress 2.2 install over to WordPressMU 2.7.  Here are some tips to make your experience a little easier than mine was.

Moving content from one WordPress site to another is fairly straightforward, as long as:

- You’re not moving from WordPress to WordPressMU.  WordPressMU has a table structure that differs from that of plain vanilla WordPress, so some extra steps are needed (more on this below).

- You have less than about 2 MB of content on your WP site.  There are some hard file limits on the built-in import and export functions of WordPress that severely limit its usefulness.  In fact it’s almost impossible to migrate a large site using these features.

- You’re going from WordPress 2.5+ to WordPress 2.5+.  The database scheme is different prior to WordPress 2.5, as this was the version that introduced user-defined taxonomies for categories and tags.  So simply moving source tables to destination table won’t work.

In my case, I was going from WP 2.2 to WPMU 2.7, with the old 2.2 site becoming one of the “member sites” on the new 2.7 installation.  Here are the steps I followed:

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If Facebook wants to be the king of hill, they’re going about it the wrong way. The number of useless apps that cram my Facebook feeds with useless “top friend invites” and “super hugs” is just too much. Those of us who would prefer a more serious social network tool would prefer the closed, no-frills approach of something like a LinkedIn, which doesn’t allow “apps” to be added, and tries valiantly to keep nuisances to a minimum.

Still, LinkedIn is for business-oriented users, and will never have the flexibility or wide-audience draw required to make a ubiquitous, dominant social network. People go to LinkedIn because because of its tight focus, and, in many cases, that’s why people avoid LinkedIn as well.  And in the end, tools like LinkedIn won’t suffice to help salespeople, because it’s mostly sales people than inhabit its garden (let’s face it).

Buying and selling aside, I’ve been doing a ton of thinking about social networking lately, because I was charged with creating a social network for a company in the media business. This social network is geared around a specific pastime of American culture–a vertical subject area too narrow for a Facebook to be excellent at.  What’s more, this social network wouldn’t be a good extension of a large publisher or broadcaster already involved in this pastime, because traditional media is bent on subcription fees and a lack of openness that discourages adoption.

So there’s a specific role for culture-driven social networks, things geared around video (like YouTube), sports, and music, though none of these verticals has been dominated by a single player, except for video probably. What’s needed is a social network infrastructure that allows many enrollment-based sites to be used with a common access credential–that’s right, a single sign-on for many social networks.

Google’ OpenSocial offers some of this thinking, but adoption has been laggard. Another example is Gravitars, which allow a common avatar picture across many blogs. Gravatars is supported by WordPress and Typepad, among others.

The challenge to seeing a single sign-on implemented across the medium is that the players who are big enough to make it happen (Facebook and MySpace, make no mistake) won’t do it, because they’ve gone into revenue-sucking mode.  So time will tell.

Using the Bitty Browser widget and a widget-enabled theme, like the one I’m using, WordPress users can now embed Gizmo5, the chat application, into their publications, allowing cross-network messaging functionality from any WordPress publication. Cool stuff. Also recently introduced are widgets that do the same for Google, Windows Live, and other widget-friendly web tools.

UPDATE: Tried it; don’t think it’s that exciting.  Might be better for heavy users of Google start page?  You tell me…

Whenever somebody asks what they should use to publish a web site, I adapt the slogan, “I’m thinking Arby’s” around my favorite web publishing system, WordPress, and I say, “I’m thinking WordPress.”

2.5 is worlds better than previous iterations. Tags (which appeared in 2.3 along with a category to tag converter) are helpful, and the new administrative GUI is clean and 2.0-ish (it took them to 2.5 to get there though.)

The media browser is also much, much better.

Dude, all I’ve got to say is MySQL 5.0.51 has issues. And apparently so does WordPress 2.0.1. A confluence of issues has had my blog down for the last few weeks. But we’re all up to speed now. Expect more in the coming weeks. Oh, and for those of you who noticed, yes I lost about 1.5 months worth of posts.