The blog Ciber-Genética is a resource for teaching and learning. Rosario Rodriguez-Arnaiz, Lucero León Rangel, Isaac Reyes Martínez, Jovana Jasso Martínez, América Nitxin Castañeda Sortibrán. Dept Cellular Biol, Sci Fac, UNAM, Mexico, DF, D.F., Mexico.

   Internet offers a wealth of opportunities to optimize the processes of teaching and learning. Blogs are resources with vast potential at the time of work in the classroom. Through a blog the students have greater interaction with the content, can access to information outside the classroom and also can leave comments that are answered by the teacher or other students. Likewise, the student can come into contact with news, articles and events that are conducted in the area. The use of the Ciber-Genética" blog in the classroom represents a useful tool to transmit updated information that complement, reinforce and increase the information seen in the session. The contents are organized in chronological and in thematic order. External links (journals, books, and web-sites,among others) are also organized by topic, and help to create a network of related sites. A survey with 15 questions about the pertinence of the blog was done between students. 87.7% of the replies were between excellent and very good. The Google Analytics Service was used in order to obtain information about the blog: the blog has 944 posts; the tag news contains the highest number of posts (27.86%). From September 2009 till October 2012 the blog was visited 174,302 times and from September 21th until October 2oth the number of visits was 8,132, thus a mean of 270 visits/day were recorded. Visits were from 117 countries around the world but Mexico was the country from which more visits (44%) were received. The entry Timeline of Genetics was the one most visited.