A reputation can be easily damaged - especially on the Internet. Therefore, you should always check what appears online about you or your company/organization on the Internet.
Simply google your name and see what you find on the online. Then google the name of your company/organization. Also google your website to find out if and where it is mentioned. Additionally, you should enter your name, your company’s/organization’s name on Twitter to find out whether someone twittered about you.
This way, you can find out what others are saying about you or your company/association. You can also find out if your work or your business name is used (without your permission).
You should set up a Google Alert, so you do not always have to google your own name. You will be sent an email as soon as Google finds something on your search term.
If you find that someone uses your information, data or work without your permission, spreads negative information about you, you can either ignore it and hope that the person fails to do so in the future. You can, of course, confront the person directly, and also ask why she/he did it. A third possibility is to get professional help. There are firms or lawyers, who specialize in such cases and know what to do.
Do not forget to check again, what is distributed through online about you and make sure that your image does not suffer.