I was advised to look for a writing site for two reasons:
1. To sharpen my writing skills and broaden my subject base;
2. To broadcast my own books through a specific page.
Having found Hub-pages I first put together a page to do 2) whilst adapting my writing style 1) as a sort of 'sales vehicle'. I was asked after a matter of months whether I wanted to start a sub-domain...
Several years later I have topped 105,000 readers, I'm on almost 300 pages on subjects between specialist travel, history and a few period sagas. The writing here also brings in some earnings... handy.