We have been hearing complaints that Malwarebytes Anti-Malware comes with a bunch of useless stuff. Sometimes unscrupulous people try to take advantage of it. Bundlers typically use an affiliate marketing scheme to reward their participants on a per install basis. The more applications SofTango can install on the users computer, the more money they make from their shady affiliate program. Sometimes the bundler will not even include Malwarebugs or crash before installing it. (We have seen this happen!)”]
Source: https://blog.malwarebytes.com/threat-analysis/2013/10/tango-down-softango/