Good timing Peter! I started off a new blog recently and have been bogged down in the detritus of academic life. I knew blogging took time but it suffered when I hit a busy period just after my teaching finished (never understood how that worked).
Regarding the choice of theme, how important is this? I’d like a blend of themes but suspect that this might end up a little too entropic for the general reader…
Here are a few more thoughts. I had a look at your site, Jean and I have added it to my blogroll, and my feedreader so you gain a little blog karma. You already seem to have picked a theme – you want to communicate science and I’d urge you to stick with it. It can be difficult at the start because you may not know anyone is reading your blog, but even the act of writing is therapeutic. be patient – it can take weeks or more before you get feedback, but you may also find that you have discovered your theme or role. Be honest, and say as much or as little as you feel you can. You are in public, yes, but unless you say something really outrageous or illegal the sky won’t fall in.
Read other blogs and consider joining an aggregator such as http://scienceblogs.com/ or http://blogs.nature.com/blogs and http://blogs.nature.com/blogs/suggest (where you can submit your blog for wider visibility). [I can’t remember which of these are invitation and which act as a service.] Perhaps early days, but maybe some of my readers will give you hints.
I know it’s hard work, and I know I don’t do it as much as I should, but consider adding links to other blogs and explanatory links (for example link to Higgs Boson in Wikipedia).
You may find it useful to think of a particular readership and tune your posts to them, or you may wish to write more broadly and see what gets picked.
But above all do it because you want to, or feel you are driven to – not because you feel it’s your duty.