Can I use the logos of other companies on my site?

Not a dumb question at all!

Technically logos are copyrighted so you need permission. Things like the Facebook "like" button typically come with permission as part of their Terms of Service, which you can find on their website.

Generally the TOS for any company will cover logo use, and generally they default to say "You cannot use it," simply because it's the safest. That is, if someone abuses they can always say "no, you have to stop," and yeah, you do.

That said, it's possible to get permission many times.

That said, most people just do it and see what happens, taking the logo down only if they find out and only if they don't give you a variance later. I'm not saying that's right or wrong, good or bad, legal or not, it just is what often happens.

What Jason said.

Often you see consulting firms (or ISVs, or whatever) listing their clients and in some cases client logos. The use of another company's logo is more likely to generate a "Cease and Desist" letter or request to remove if it:

• implies some sort of endorsement based on its location or the words around it,
• has any appearance of looking like you're trying to pass off something - a product, for instance - as theirs,
• it is explicitly prohibited in a contract you have with the client (all of which read "without written permission"), or finally
• the logo is a direct competitor's.

With regard to the social network logos, I believe they are all safe. It's their purpose in life to have their logos and services seen by as many people as possible (can you believe we're still after eyeballs in 2010?!?!?!).

Cheers, Rob

As with everything startup, i think it's always better to ask for forgiveness than beg for permission.

Besides, you shouldn't ask questions whose answers you don't want to hear.

As many have said above, many companies embrace it. They want you to use their logos as long as it is to promote their services o when talking about them ( a blog post for example). Also, check in these companies websites, many companies now have a "Press" page where they have details and media they want you to use when referring to their company.

Good luck!

Ricardo.

Some companies embrace it yes, but I can tell you of one specific company, which I won't name for obvious reasons, that will notify your hosting company of wrong doing, black flag your domain name across the planet and deliver notice to you via a knock on the door with a letter delivered in person ordering you to comply with removing their logo off your website - even though the website said something nice like "proud supporter of XXXXX click here to get your xxxxxx from xxxxxx" and hotlinked back to their website shopping area. Three violations:

1. Using their logo without consent.
2. Altering their logo (reduced it to fit in an area on the page)
3. Hot linking to their site from min...

What was enforceable in court I have no clue. I didn't wait to go that far and I removed everything.

Lesson: Ask for permission, follow instructions to the 't' about which logos to use, sizes to use, context of using it, and check about hotlinking to their site from yours. Print those instructions and consent and file it away safe and sound.

Here: https://www.eff.org/issues/bloggers/legal/liability/IP

Questions About Trademark I want to complain about a company. Can I use their name and logo?

Yes. While trademark law prevents you from using someone else's trademark to sell your competing products (you can't make and sell your own "Rolex" watches or name your blog "Newsweek"), it doesn't stop you from using the trademark to refer to the trademark owner or its products (offering repair services for Rolex watches or criticizing Newsweek's editorial decisions). That kind of use, known as "nominative fair use," is permitted if using the trademark is necessary to identify the products, services, or company you're talking about, and you don't use the mark to suggest the company endorses you. In general, this means you can use the company name in your review so people know which company or product you're complaining about. You can even use the trademark in a domain name (like walmartsucks.com), so long as it's clear that you're not claiming to be or speak for the company.

Since trademark law is designed to protect against consumer confusion, non-commercial uses are even more likely to be fair. Be aware that advertising may give a "commercial" character to your site, and some courts have even gone so far as to say that links to commercial sites makes a site commercial.

You should use the A tag and refer to their website as well as use proper alt tag. Also, when you show your copyright notice in your footer, you can say something like.. "Any trademarks or logos used throughout this website are the property of their respective owners." That normally works.

As previous comments, many companies actually promote the use of their logos as it brings in additional traffic.

HTML5 Tip: When you add those logos, its now recommended to use HTML5 to add those images. Use Figcaption tag. Your site will get more weight if its up to date (Using HTML5)

Example: Linking Google Logo

HTML5 Linkage :)

 <figure> <img src="http://blogoscoped.com/files/logo-template/1.gif" alt="Google's Logo" />
<figcaption>Google.ca</figcaption>
</figure>

Above code will render like this.

Google.ca