Google Chrome Extensions:Beware!

This is a notification about downloading extensions for Google Chrome.I found out from Google search that Google Chrome Web Store is riddled with malicious malware in the shape of extensions (free of course). I should have found earlier but now it's rather late.Damaged done!

I downloaded an extension called History Calendar made by Russian programmers, it's supposed to allowed the Chrome user to look for older surfing history (3 months or more) and URLs. It instead messed up my Chrome.
I had to discard it and now SiteAdvisor is not working or displaying in Chrome.

Both search results from Google displayed in IE and and Chrome will be highlighted in blue colour unless Siteadvisor is shut down. Once Siteadvisor is shut down, I am blind even though I have WOT.

Watch out in downloading extensions for Google Chrome from Google Chrome Web Store .

The link is here https://chrome.google.com/webstore/d...oijcg?hl=en-GB

Thank you for verifying.

Well,thank you very much Callender for the pointers.