Hi Sylvain,
There is a problem with “french” accent in twitter card content (summary), on my site everything is utf-8. In my TimeLine (https://twitter.com/NicolasFruit), with firefox, and I get:
“Le 13 octobre dernier les Drupalistas de la Belle province se réunissaient pour le 5ème DrupalCamp Montréal …”
Strange, because on
An image worth a thousand words: http://nicolasfruit.com/sites/nico/files/images/Pb-Accent-Twitter-Card.png
UPDATE: I just checked with Chrome … and the accents are OK … And then I re-checked with FireFox (just hit refresh) … and … everything is OK too … random bug … not fun to reproduce ;-(
UPDATE2: When I open a fresh browser, visit https://twitter.com/NicolasFruit , and click “Voir le résumé” on this tweet, then I’ve got the Problem. Then if I hit refresh on the browser, and “Voir le résumé” … then everything is OK …