Gmail is now offering the Web clips to some of their Gmail users where you can also add RSS feeds. eHow offers their "Article of the Day" feed and you can add this feed to your Gmail preferences easily to get the updated "How to" article fo the day.

Web clips was recently released to all Gmail account users.

[edit] Steps

Log in to your Gmail account.
Click on the "Settings" link on the top right hand corner of the screen.
Click on "Web Clips" under the Mail Settings tab.
Click on "Add more clips" at the bottom of the screen, this will bring up a pop-up window.
Click on "Custom Clips" which is the tab on the far right.
Where it says Enter an RSS or Atom feed URL: type in the URL: http://www.wikihow.com/feed.rss and press "Add".
You're done!