A weekly blog can succeed, and (if ad revenue is an eventual goal of yours) even be profitable. Typically, though, frequent and high-quality postings are preferred. Every day isn't necessary, especially not at first, but perhaps every other day or so would be good. Keep in mind, as well, that not every post has to be "I wrote this poem" or "I've written X of my book, check it out." Posts can also include things like simply your perspective on the art of writing, or anecdotes about your writing process or funny things that have inspired you. Perhaps you've recently went on a trip, and collected photos that you think will inspire something. Write about them! Make it not just about promoting your work: make it about promoting YOU. The more personal you make the journey with your readers, the more involved they will feel with your work when you do share it.

So, I guess the answer is to post as often as you can, in any supplementary way you can. Perhaps build up an offline repository of entries before hand, a good handful or so, so that when you begin to post you won't end up in a rut where you're flying by the seat of your pants, but have a buffer in case of problems or simple lack of enthusiasm on a particular day.

Just do it; the rest will follow suit.

Melanie E.