Quick extra post here just because it's been coming up a lot in comments lately.
It's totally okay to link back to one of my posts on your blog or a forum or wherever. Blogs actually need those links to help them grow, so you're doing the blogger a favor by spreading the word (and thanks! if you do). No need to ask me, feel free to just do it.
I have Google alerts set up so I do see most posts that mention me or my books, but it's also okay to tell me you linked or posted about me. Not everything gets caught or gets caught in a timely manner.
The only thing I wouldn't be happy about, is if someone copied and pasted the entire post and didn't A) give me credit for it, and B) didn't link back to here to give the blog credit for it. That's like stealing someone's work and that's never good.
Re-posting quotes is fine, posting the opening is fine if you want to show parts of the original post.
Being inspired by something I wrote and talking about it yourself from your perspective is also fine. (a link back to the original post that inspired you would be nice, too)
The blog is here to help other writers, and (she says shamelessly) promote me and my books a little as I do that. The more people reading the blog the better. So link away if you'd like, with my thanks.