I just reinstalled Plaxo, in order to get my address book back after my laptop died. I updated my business card. Little did I know, Plaxo emailed all my contacts. I was not warned, I was not told I should double check my spelling or information before sending it out... nope, Plaxo just took it upon itself to spam everyone with the new card. This program's bad UI choices has now endangered relationships. I am steaming mad, and cannot figure out how to counter this amazing faux pas of software, except to uninstall Plaxo and warn everyone else I can find not to use it.

update: Be sure to read the comments