Shroomy
Adventurer
Heh. You think bugs and missing features unavoidable in any software? Well, there's a matter of degrees we're talking here. DDI has more missing features than actual features. So much so that it means charging the fanbase just to view an R&D article about how gnomes were handled in 4e. They're not even providing access to stuff just to maintain and generate interest for non-subscribers, and that's shabby. The major feature of a subscription-based service shouldn't be previews of material that the customer will ultimately wind up paying for at some point in the future. That's paying to beta test, and the fact that DDI does just that is telling.
Are you a DDI subscriber? Because judging from this post and the one below it, you are not, and you don't seem very familiar with the DDI or the free offerings on the WoTC website. For one thing, the PHB2 class previews were not the major feature of the DDI subscription service (the compendium, CB, and e-magazines are arguably the major, current features of the DDI), they're an extra bonus to subscribers. Also, those were completed classes, not playtest material; WoTC did not actively solicit feedback on them like they did for the artificer or barbarian playtests. And to your point, there have been four, count'em, four articles of playtest materials released so far in the DDI (the artificer, barbarian, AV2, and Primal Power), two of which were free. OMG, I feel so scammed, I wonder how I'll feel in two months when I get my hands on the playtest version of the monk. Oh yeah, pretty damn good, thank you very much.
And while the "Design & Development" article may have been a trifle (magazine and newspaper columns usually vary in content or interest anyways), "Deities & Demigods: Bane," "Playing Shadar-Kai," "Secrest of the City Entombed," and "Planar Epic Destinies" were definitely not. I pay $5/month for those articles (dirt cheap IMO), plus access to all of the other DDI services, which doesn't sound like the only thing WoTC is offering to subscribers is a puff piece on gnomes and half-orcs.
So, after all that, what does WoTC currently offer in terms of free materials, well let's take a look:
Podcasts
Art
Free Fiction
Multiple Excerpts from their Monthly Releases (including a new PHB2 preview)
RPGA News
"Steal this Hook"
"Vicious Venues"
"D&D Alumni"
"Previews and Beyond"
Compendium Demo
Fully Functional CB Demo covering materials from levels 1-3
Several free issues of 4e Dragon and Dungeon
Random other freebies (like the "Treasure of Talon Pass" adventure)
Yes, that is paltry.....