us.mg201.mail.yahoo.comは安全ですか？

The basic concept of e-mailing is very easily and artfully mastered by Yahoo!. However, the advertisements are absolutely horrible. Whenever I go to, say, a clothing store's website, I am bombarded in my email with ads for this store. I do not mean just spam e-mails, but the ads on the sides are just terrible. That is why I gave the site a poor rating for privacy.

This site is the mail service for AT&T Yahoo. Although it is useful for the services I use it for, the UI really needs work, because sometimes I can go into this site and the clickable buttons on the site do nothing and it's only about every second time I go into the site that the functionality actually works. I hope the staff is doing something to help mitigate that said problem with the UI. UPDATE: I have been able to trace the problem with the UI not working. It appears that when I enter the mail site from the "Yahoo! Mail Preview" app, it seems that the functionality of the mail page it leads to DOES NOT work at all: every item on the page is unclickable when I enter it through that medium. If I enter it via the e-mail button on the "Personal Assistant" page app, however, the page works as intended. Like I said, this page REALLY needs work!