but what would I write about?

Karen has written an excellent post of suggestions re what to write in a weblog on her Vox blog :

Ok, so these are not actually rules, maybe they're guidelines, or simply food for thought:

 

First off, know this: I want to hear your voice. This is not formal writing. Talk like yourself, like you do when we're having dinner together. Ok, the way you do before we've had four bottles of wine. Yes, you get points for good spelling and grammar (that comes naturally to you anyway), but if you start to sound like Abe Lincoln it won't be you. Be you. I think you're brilliant.

 

Second, talk about what you know. You know so much more than I do about almost everything from politics to parenthood. Talk about your experiences. We all make our way in the world in a different way. Tell me about yours. We're not together every day - or even every month. Fill in some of the blanks for me.

 

Three. Don't be too ambitious, just tell one of your stories. Vox is the land of anecdotes. Short and sweet works great (I am not a good role model for this).

::and much more here

(and if you want your own Vox blog, which I highly recommend, find out more and sign up here)