rel="logo" is a standard I proposed over a year ago as a way to deliver up to date SVG logos. It was rejected by Microformats for it's similarity to rel="icon". I disagree that logos and icons should have the same use, but I'd like to resurrect/rebuild the idea and attempt to make it more useful.

At the moment, there is no good way to deliver and find current vector logos. Site like Brands of the World don't do a great job, and not every site has a brand guidelines page.

So, is an idea like rel="logo" useful? Could it be improved? Would you use it on your site?

I'd be interested in how the standard works with different logo proportions. As many companies have twitter avatars now it might even be reasonable to enforce a square proportion.

But I'm not sure how used this would be. Seems like an edge case for other sites to use your logo?

Dealing with this problem on almost day to day basis for different purposes. Most of the time it will be outdated, has wrong colors etc. Should be easier and more efficient way to do this, perhaps rel="logo" is the one.

It seems like we can already use this without it being an official standard, right? So what are we waiting for? ;)

We should do this too.

Granted you don't have to do it many times, but it's such a pain to keep Twitter, Facebook, iOS, favicons all updated. Wish they came from a common place.

I think as brands become more portable and services more automated, a standard like what Matt is proposing makes sense. Thinking about the fact that brands get aggregated, listed and relisted, a standard to make certain that your brand identity is represented the way you want. This consistency will leave a positive impression on customers and prospects, to me sounds like a win-win.

Sacha, it can be used right now. Foursquare actually already uses it.

I think this is the start of a new standard. There is such a drastic variance in how companies/startups/apps distribute press kits or logos.

Something like this is simple and doesn't have much overhead.

The one thing I'm interested in finding out is whether this posts a request on page load. I haven't looked to far into it yet but that might be one potential issue.

For request on page load, the current 'api' is just a proof of concept. I think ultimately a page pulling logos would want to cache them and only check for updates occasionally.

As a product manager, I wanted to utilize SVG icons in my products. But as u most frequently experience there are still compatibility issues.

Moving forward, I wonder if there are opportunities for format and color built into the tag
i.e.
rel="logo square full-color"

For format, I would imagine:
horizontal
square
vertical

For color:
one-color
one-color-knockout
full-color
full-color-knockout
(or non print derived terms...)

There may be the option to extend color i.e. full-color-cmyk full-color-rgb, but I think that may get too complex and may be better to spec color in a brand guideline

Additionally, perhaps rel="logo guidelines" could link to a website or pdf for further instruction