In the past months I've been including QR codes in my presentations to make it easier for the people watching my presentations to tweet about them.
It's fairly easy to prepare such a QR code:
https://twitter.com/intent/tweet?source=webclient&text=
Today I saw the following message in my Twitter timeline:
First you think, nah won't look at it, but then that final 'a voir absolument'...
This weekend I subscribed to the RSS feed of groundswell, a blog that was started by 2 Forrester employees and that is subtitled "winning in a world transformed by social technologies".