When a dozen Cuban bloggers wanted to stage a protest last month, they simultaneously tweeted, texted and posted messages like ``Freedom.''

One later used a blond wig to sneak into a government building and complain against censorship of the Internet. And the next day, she posted a video of her complaint on her blog.

Carefully, but with daring determination, some Cubans whose blogs once focused largely on the frustrations of daily life are moving toward sharp-edged commentaries and activities that some fear will eventually lead to a crackdown by the communist government.