Twitter when you can, blog when you can and tag everything you do online with your name and the name of your books and websites.
I visit writers at home frequently to teach them how to use their new websites, and I often find them trying to write in very uncomfortable positions. Having worked in leading companies with proper Health & Safety policies, I am now only too aware of how to sit for best results. You must sit properly - have a sensible desk, a good chair and foot support. Sit upright, with knees and elbows at right angles, and take frequent breaks. The picture on the left shows the best position. Your eyes should be level with the top of your computer screen. Laptops present particular hazards.
OTHER TIPS THAT CAN HELP
We will add good, helpful information tot his section regularly.
Blog first thing every day to s-t-r-e-t-c-h your mind as you would your body.
Loosen up your creativity.
20 minutes off - at least - for every two hours of writing.
Make notes if you are in full flow and don't want to lose your thread.
Switch off the internet if you are unable to concentrate on your writing.
Have internet free days, or morning/afternoons/evenings.
Everyone will admire you when you do.