That depends entirely on the cost of a mistake. If the cost of mistake is low, it's better to make a lots of decisions quickly than it is to try to get each decision correct.
If you're producing the slides for a live audience, this style is superior. People can read faster than you can talk, so if what you're saying is all packed onto the slides it creates a bad audience dynamic.
If, OTOH, the slide you're producing are intended to be read, denser, more informational slides are appropriate.
As with most things in life, what to do depends on who your audience is.
OpenID and OpenSocial aren't getting traction anywhere.
OpenID because it's a non-solution to a non-problem, and OpenSocial because Google didn't provide developers with the primary benefit of the Facebook Platform (distribution).
Plus the social networks that implemented it were lame and didn't monetize well. OTOH, Playdom gor their start on MySpace.
Yeah, everyone knows that search is only good for driving traffic at other pages where you sell banner ads. Building a portal is the only viable long-term strategy, and Yahoo! has that locked up.