To succeed as a freelancer you probably need a neutral platform where you can showcase your work.
To be hired faster by prospective employers, you have to show them samples of your work.
It's how they'll find out whether you can deliver what they are seeking. Let's assume that whatever your blog covers isn't in any way related to the job you are applying for. You probably won't ask that person to visit your blog to evaluate the quality of your writing.
That's why I need your help here? Where do you showcase your work?