TO promote your website or expertise, you have to do a lot of writing. (That's why these QuickTips are strong in this area...you can't exist - or succeed- without being a good writer). But it's a labor-intensive job, even if you're a fast typer.
SO here's 2 ways to make your writing go further:
1) Write one article for two or more target audiences. Now, if you submit an article to an ezine, they'll take it with more enthusiasm if you wrote it for them alone. But why don't you target another ezine whose readership is different but which will also your article? Then advise them both of the proposed placement in each other's ezine. You'll get added kudos for doing that, as well as double exposure.
2) When you answer a query from a client, make it a long one. Then adapt it to an article format by removing any identifiable trace of the client's problem. Now you can submit it for publication and make your client - who has gotten more than they expected in your answer - and your ezine editor both happy.