Direct Access Block

Dammed spamers!
Somehow spamers are finding my addentry page without ever going to my home page. They are going directly to addentry leaving their spam and leaving.
1. Does anyone know how so many spamers find our addentry page? In six days I have had 2600 spamers enter my site at my addenty page.
2. Does anyone know how to block a page from entry? I mean can I force the spamers to go to my home page first? If the spam scum are all distributing a list of addentry pages in the spam scum community we are all getting our addentry pages hit directly.
3. Can the .htaccess file be modified to block entry pages.

Thanks for the help,
Ryan
www.gypsylounge.com