These are the links to be check

namecheap (link using redactor toolbar)

https://support.google.com/mail/answer/6593?hl=en

www.google.com

http://www.imageoptimizer.net/Pages/Home.aspx (simply writing text)

Check this site for the image optimization http://www.imageoptimizer.net/Pages/Home.aspx(inserting link from redactor toolbar)

http://nileshmahajan.com/nileshb/wa_social/spaces/training/online-entrepreneur-certification-getting-started-level-1