Spanish versus English

The first decision I have to take regarding this blog is quite political: Spanish or English? What language should I use?

I already have another blog, written completely in Spanish. So, since the idea is to provide a diverse view of whta astronomer do to a very wide community, I believe that the best option should be English. However, if an entry is interesting enough, I will translate into Spanish and I will add a link to it.

By the way, the blog is named Cuaderno de Bitácora Estelar.

PD (2009/01/05): My friend Franck Marchis, who is also part of the Cosmic Diary blogs, has the same problem. He has decided to write both in French and English. I might, after all, follow suit and include some entries in Spanish.