The problem with promoting your art on the web is that the internet is a bottomless bucket that will swallow whatever amount of promotion you can throw at it in an attempt to make you spend all your time on web promotion and no time making art.

But I can't do that! I have a performance schedule and I have a production schedule and they take time.

What works for me is flowing out of performance into production and then into promotion as an integrated workflow. My performance takes production realities into account. The production work keeps the promotion in mind. And the promotion is designed to be easy to do. Because, believe me, you can spend endless hours typing descriptions into text boxes and it will keep you up all night if you let it.