Lost users are not a good thing. Sometimes, specially in huge websites, users get lost easily. The company logo (also called “Site ID”) is usually used to drive users back to the home page, as they click on it.
The problem is that often users don’t know that they can click on the Site ID. That is why some sites put the words “Home Page” near the company logo to make it clear to users that they can click on it.
I have noticed that many sites have been using a new approach to do the same. The words “Home Page” appear only when you hover over the company’s logo, persuading users to click on it. Again, I have to use Amazon as a good design example, they convert the logo into a button as you hover over it.
Click here to see the example working on the site (could not catch it doing a print screen)

YouTube is also doing almost the same. For their interface design they choose an elegant solution displaying just the tag “Home”. Bravo YouTube and Amazon!
Click here to see the example working on the site (could not catch it doing a print screen).

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Disclaimer: with this kind of article I want to point out usability and interface problems some sites could have. Please do not take this as an attack, take it as a free advice. I would like to make clear that this design problems could happen for many reasons, including lack of time or money.