As announced I have created an aditional blog inwordpress. The actual url is http://freelancescience.wordpress.com/.
The idea is to keep this blog for quantum gravity related stuf and the other for diferent aspects of physics, math, and, ocasionally, another sciences. A separate interest is to see how well it works the LaTeX functionality of wordpress. If it works fine, and blogspot refuses to allow LaTeX, I would consider the posibility to migrate this blog there (afther all they have facilities to do so).
Advise, the other blog will have most of their entries in spanish, because of the expected target audience, if some non spanish speaker is particularly interested in seeing english entries he could let me a message and I would see what it can be done.