If you are in the shareware industry you must join the Association of Shareware Professionals now. After just one day I have learned enough to justify the membership fee.
The member-only news groups are amazing. They have the highest signal to noise ratio of any online community I have ever seen.
For the cost of just two typical programming books, you will have access to some of the most successful shareware developers in the world. Seriously, go fill out the application right now.