PARIS –- Tunisia’s recent crackdown on cyber-dissidents has taken an ominous turn with the arrest and detention of journalist Zouhair Yahyaoui, founder and editor of the online news site TUNeZINE. Better known under the pseudonym Ettounsi (“The Tunisian”), Yahyaoui was charged Thursday under clause 2 of Article 306b of the Tunisian criminal code for “knowingly