Somewhere around the end of the month, I buy the Webscription for three/four months out (for example, I bought Nov '03 somewhere between July 31, '03, and Aug 5, '03).
Baen Books has this nifty 'buy one, give one to a new customer' policy. If anyone has not received a Baen webscription before, and wants a free month, let me know! Your e-mail address has to not be in their database to get a free month. First request in my home inbox gets it - sraun@fireopal.org.
If someone beats you to it, I put you on my request list, and you're one of the group that gets first shot at the new months as they come out.
Here's what's coming up:
May 2009
In the Stormy Red Sky, by David Drake
Diamond Star, by Catherine Asaro
Fires of Freedom, by Jerry Pournelle
Voyage From Yesteryear, by James P. Hogan
Slanted Jack, by Mark L. Van Name
Genesis, by Paul Chafe
To Outlive Eternity, by Poul Anderson