I have been using Twitter for some weeks, and perhaps you would like to follow me.
I am progressively focusing on geology issues and general science, but please be aware that I also write in Spanish and sometimes I write about social and current affairs. My tweet feed is not exclusive for this blog, as I don't see the need of keeping a different account for each website I have! Also, I try to keep a flow of 70/100 tweets per week, which I think is a good number.
If you decide to follow me, ping me and let me know!