Hi,
I am a Linux sysadmin who actually shares his passion by writing online Linux tutorials through various platforms. I have also participated in the organization of some Linux events and training sessions in my country.
It will be a pleasure for me to help you to improve your blog about the open source world. I can help for topics regarding system administration, security, virtualization and some others that you can need.
Feel free to contact me so that we can discuss about how you want to improve your blog, the types of topics that interest you, the frequency of publication that you can need and some others things.