Mexico & Chile base workers' organizations

From time to time I check the following (and other) sites. These organizations all seem to have some form of contact with anarchist-communist groups and the Red & Black Coordination syndicalist unions.

Anyway, I see that these two base organizations seem to be active, the Mexican
Comité de Resistencia Clasista
http://resistenciaclasista.wordpress.com/
and the Chilean La Batalla
http://www.labatalladelostrabajadores.blogspot.com/

The Construccion Sindical de Base and libertarian formation seem to have stopped publishing on their websites:

The Construccion Sindical de Base : http://cosiba.blogspot.com/
and the Tendencia Sindical Libertaria : http://tslibertaria.blogspot.com/
but the "Linea Anarco Comunista hacia la construcción del Partido Anarquista"
(members of whom seem to have been involved in the LST)
have written "Criterios generales para la construcción de Agrupamientos Sindicales – Tendencia Sindical Libertaria":
http://www.lac-arg.org/lecturas/lecturas-recomendadas/clasismo/criterios-generales-para-la-construccion-de-agrupamientos-sindicales/

Anyone in contact or know why the later two seem to have stopped functioning? Or, in the case of the Construccion Sindical de Base do they still function but don't publish electronically?