First, Kalynne Pudner asked about #6 on this list of author blogging tips. I'll quote it here:
Free is your friend. Make your work available in its entirety. If someone is willing to read your 400 page novel on screen, you have found a fan for life.
I'm glad you asked, Kalynne, because this is the one item on that list I have mixed thoughts about.
It's great to syndicate some content on your blog as a teaser--this will help build attention. Also, some bloggers have online blog novels. Here's a great example--Lisa has been blogging a new novel, THE FOUNDING WHEEL, since December. Lisa and other bloggers are creating internet-syndicated blog novels with Dickensian themes. In my mind, this is an exercise in craft and themed writing as well as in group workshopping (albeit virtual group workshopping). We all need writing practice to hone our craft, and in Lisa's case, blogging provides that as well as an external audience that can reinforce the deadlines she sets for herself.
Lisa's example is a little unusual because of her project and intent. For other less specific projects, it's important to know while you're syndicating a) your personal writing type and method and b) your audience, and use this information to temper your syndication. There are some authors who have a very well-developed e-following (certain kinds of books appeal to the kinds of people who tend to use blogs, and other kinds of books less so). Up until the point that those authors have secured agency representation, any content they syndicate on their blogs will have great promotional value. At the point of securing representation, however, I would recommend taking all but a sample down.
1) Blogging is a form of publishing, and there will be an e-book clause in your contract with a publishing house. You want to be able to sell your first serial and e-book rights, so it's important that your final edited manuscript not already have been e-published. The time frame might seem a bit gray here, but I've chosen agency representation as a marker because that's where other professionals besides yourself (the author) come to work on your manuscript and when it starts evolving into its final stages. At any point after that, make sure you have verified with your editor what your house believes is acceptable pre-pub internet syndication to make sure you're not violating any contracts.
2) You don't know everyone on the internet. Most of us are nice but there are some people who might steal your material, offer you malicious feedback, or misunderstand or misquote you. The risk of something untoward happening grows in direct proportion to how much internet traffic you get (trust me, I know from experience). If your blog traffic starts to get pretty high, it's important to be more careful about what you're syndicating. The good news is by this point you will probably already know who at least some of your good trustworthy e-friends are, and if you want their feedback you can always communicate via email, etc. Doors don't have to close, but fame should make you a little cautious.
I hope this answers your question. I know I've been a bit ambiguous, but it's an ambiguous problem. The internet is truly a marketing tool as well as a place a lot of us come for entertainment, but it is, obviously, not without its pitfalls. So we all need to know our own situations well and exercise some caution.