We’ve seen two tweets from @BarackObama in the last 12 hours.

That follows one tweet yesterday and two tweets last week. Obama tweeted seven times in May, twice in April, once in March, not at all in February and twice in January.

Before that, the last time Obama tweeted was November fifth.

The last time Obama tweeted twice in one day? Election day.

First quarter ad sales were off 5% versus Q1 ’08, the IAB estimates. This is the first year-over-year decline in quarterly Internet advertising since 2002.

Versus the holiday-bloated Q4, the Q1 number was an even more horrendous decline, down 17%.

Relative to the rest of the economy, the Internet advertising decline doesn’t look outrageous. But the rest of the economy isn’t still pumping out product — more cars, more hotdogs, more washingmachines, more homes — with reckless abandon. Producers have cut back to reduce costs and avoid stockpiling goods nobody will buy.

The same isn’t true online. New dotcoms are still being conceived and birthed daily, and CGM (postings on Youtube, Myspace, Flickr etc) is still doubling yearly.

Malthusian pricing Armageddon impends.

Update: Here’s more data on overall advertising trends. The Internet’s Q1 decline looks wonderful relative to things like ad spends in local Sunday supplements (-38%) and B2B magazines (-30%) and spot TV 101-210DMAs (29%.)

David Carr wanders around a dotcom party in NYC:

I wandered the rest of the party and noticed people staring at me. Had I become the dad in the basement at the teenage party? No, as it turned out, it was the analog act of taking notes with a pen on a notebook that was freaking people out. I may as well have been prancing around with an abacus.

BTW, I just finished Carr’s brilliant and terrifying “Night of the gun.” Adjectives don’t do it justice, so I’ll just say my heart pounded and ached throughout.

Comparing the demographics of PerezHilton’s Twitter followers with those of his blog’s readers, we found Perez’s tweeps to be significantly younger than the blog’s readers. Also more female, Libertarian and comment-prone. Interesting eh?

We’d love to run more comparisons like this, so let us know if you’d like to run a parallel blog/twitter demographic survey.

We launched a new ad format over at DailyKos in April. Called the “Action Tag,” the ad format allows an advertiser to promote a specific action after a post that deals with a relevant topic area. The SEIU helped inspire the ad functionality and been using Action Tags to promote actions around health care and employee free choice.

This weekend, some of the folks at DailyKos started to debate the new functionality, weighing in on its pros and cons. The discussion has been lengthy and inspiring, and has provided some good ideas for improving the functionality, which we’ll begin to impliment shortly in concert with SEIU and Dkos.

Above and beyond the particulars of the debate, I’ve enjoyed the fact that the debate has revived a discussion that began four years ago about an risque ad for Turner Broadcasts’ reality TV remake of Gilligan’s Island. It’s amazing to see the pie-fight meme live on in the Kos community.

I leave you with this thought:

In the cheerful and snide spirit of Cluetrain, here’s the Suxorz deck from this year’s SXSW fully annotated and posted. (I’m running it big here so the text is legible.)

Here’s the Suxorz audio.

The most interesting discovery in updating the deck: since we publicly reamed KFC, they’ve dealt with their fired-employee/former-KFC-blogger problem by removing her post and unlinking her post. (And perhaps persuading her to take her blog down?)

Vote for my twittertee.

Hofi Geza, right, was Hungary’s comic genius 1950-90s. Around 30 seconds in this clip, Hofi reprises “Go marching in” as “Go Nanci Neni” (or “Go Aunt Nancy.”)