SweetIM Toolbar has been blocked for your protection.

Why was it blocked?
This add-on is silently installed along with other software, without user consent. It changes settings like the homepage and other search preferences, also without consent. It is generally regarded as malware and most users didn't intend to install it.
Who is affected?
All Firefox users who have this add-on installed.
What does this mean?

Users are strongly encouraged to disable the problematic add-on or plugin, but may choose to continue using it if they accept the risks described.

When Mozilla becomes aware of add-ons, plugins, or other third-party software that seriously compromises Firefox security, stability, or performance and meets certain criteria, the software may be blocked from general use. For more information, please read this support article.