Siglets.com  
   Free Signature files for email. Includes ASCII pictures, HTML and quotations.
   http://www.siglets.com

Signatures, Smileys & Acronyms  
   Links to information on email signatures, smileys and acronyms, from your About.com Guide.
   http://email.about.com/internet/email/msub6.htm?iam=ma

Whistle Stop Cafe  
   Personal forum with cooking tips, recipes, and simple signatures. Signature requests are welcome.
   http://forums.delphiforums.com/whistlestop/start

Subject: Funny Email Sigs  
   One line signatures captured from the Internet.
   http://www.rhymezone.com/r/gwic.cgi?loc=fp&Path=jokes/2//

My Favorite Signature Quotes  
   Collection of signatures and quotes to be used in email signature files.
   http://www.webtapestries.com/brad/sigquotes.html

SigMania  
   Members-only Yahoo group for making signatures. Willingness to share is a must here: signatures, email signatures, tags.
   http://groups.yahoo.com/group/SigMania

Making Your Mark  
   Expressing yourself through someone elses words is just one way of making a signature file. From About.com.
   http://quotations.about.com/library/weekly/aa041499.htm

The Gallery of Annoying Email Signatures  
   Signatures that are annoying and provide no useful information.
   http://www.orsi.net/Gallery/

A Guide to Email Signatures  
   An article on creating sensible and professional looking email signatures.
   http://www.gadwall.com/articles/2000/1118.html