Ezine questions

Hi,

I'm considering starting a free ezine in which to put the stuff I find or know about that's too good to just toss into the wind as a forum message.

But... what if I get too small a number of subscribers or for some other reason I decide to stop publishing? Should I make it clear at the outset that I reserve the right to stop at any time? That's question number one.

Number two is: who publishes the best course or book on how to build a successful ezine?

Thanks in advance for any replies....

Best,

- Boyd