Many pishing sites, especially myetherwallet are built up on spelling mistakes (f.e. missing letters). Saw one, that I need to read three times, before I recognized the mistake.
The ACTUAL
http://www.myetherwallet.com has its specific security tag in the address bar. Here, in the United States, it is: MYETHERWALLET LLC [US].
Make sure you have a secured website, and make sure that the security tag is correct before proceeding. This follows for any site where you are going to enter important information.