The Balance Between Intriguing and Annoying

I have a book release tomorrow.  I want to shout it from the rooftops, tweet about it every ten seconds, leave comments on other people's blogs with buy links, tell everyone I pass on the street...

Umm, yah. 

So, I'm sitting here this morning wondering where the fine line is between intriguing someone enough to get them to buy your book and annoying them so much they wouldn't read your book if it was free.

If I send a tweet out first thing in the morning, am I missing the opportunity to market to people who are only on Twitter at night or in the afternoon?  If I tweet all three of those times, am I annoying the person who saw it the first time? 

If I post about it on Facebook once a day, is that too much?  Too little? 

If I mention it on my own blog every time I post, am I driving people away?  If I don't, do you forget? Or does it seem like I don't care enough about my own book to pimp it?

If I mention it in the comments of someone else's blog, am I breaking some rule of internet etiquette?  Or is that just smart marketing?  (Without the buy link.  I would never be so forward.)

I know the regular people who stop here don't seem to mind, but you're my supporters.  (And supportive you are.  :hugs:)   Let's say it's not me.  Let's say it's someone you've never heard of.  When does marketing cross the fine line between intriguing you and annoying you? 

*Yeah, I worry too much.  What else am I supposed to do after I get into bed at night? Sleep??