Original sentence: A very large percentage of shareware projects are commercial failures.Active projects commonly see less than 0.5% of downloaders convert to paying customers , and projects may be victims of software piracy, dropping sales by half again.Another issue is the high percentage of commercial failures.It is argued that many projects could become successful by following some simple business practices.Most groups, such as the Association of Shareware Professionals  and PC Shareware  clearly state their position that any software marketed as 'try before you buy' is shareware.One problem is the lack of a solid definition.One sampling found 76% of listed projects were abandoned or no longer being updated.Sites like Tucows, download.Some shareware groups have limited definitions, allowing 'nag screens' that remind the user to by the software and refuse to accept any software with limited functionality, such as demos, trial use, or crippled software.com, and Handango list hundreds of thousands of shareware projects, many of which are abandoned