Sparse blog

I was just thinking today how sparse my blog is. I really need to write some great content otherwise my blog is not going to be very interesting. I'm not really too sure what to write on my blog - whether it be tech, or podcast related (I listen to a lot of podcasts), about Red Dwarf, IT, or something else. I suppose it could even be about television as I watch a lot of that too. 

If you have any ideas or tips or tricks about blogging that I may find useful please put some comments in below.