Blekko Virus is a browser hijacker that redirects you to Blekko.com website without your will. It's a website that claims to be spam free search. Since it pays for affiliates for each new visitor, spyware creators are happy to have one more way to get at least some money. If you found Blekko toolbar on your computer without uninstaller, you can be sure that it was done by computer hackers. If you haven;t installed the toolbar by yourself, it is also a sign of malware attack.
Additionally to tons of redirections, you will experience some other problems too. It is very likely that together with Blekko Virus you may get your system infected with some malware. It is very likely that computer hackers will try to install some unwanted software to your machine without your consent.
You should do a full system scan with a reputable antispyware program if you found Blekko toolbar to cause redirections and to annoy you in all other possible ways. This is the best way to remove Blekko toolbar and all other infections that could infiltrate if your system.