UPDATE 2013: Problem (mostly) solved today. Multiple rounds of shortening still tend to garble the original url address.

To be able to post links (URLs) to pages on the Internet in their updates on twitter and Jaiku, people are using additional services like urlTea and tinyurl to help reduce the numbers of characters to transmit the address, but leaving it functional. Those services take a potentially long address like ‘https://www.cia.gov/library/publications/the-world-factbook/ index.html’ and truncate it to ‘http://tinyurl.com/2b2kg9’, leaving more characters to write a personal message to go with the link with. However, any identity or clue as to where that address may lead has now been removed. (Not to mention the additional burden the use of those additional services places on the poor user. I’ll leave that discussion for later posts.)

I’ve illustrated how this looks when using the web interface of twitter below:

Notice that there are no clues in that address as to what to expect when you click on it. The clever twitterer might suggest that if you’ve been following Chris Pirillo for a little while you’d expect the link to be leading to one of his web casts on his site, but then again there is no information in that address to tell you at a glance what to expect. You can’t know if it’s linking to the story you already read two weeks ago, if it’s self promotion if it’s linking to a site you know and trust – it could even link to an address that would get you in trouble at work.

Enter ‘The Gulf of Evaluation’:

“Does the system provide a physical representation that can be directly perceived and that is directly interpretable in terms of the intention and expectations of the person?The Gulf of Evaluation reflects the amount of effort that the person must exert to interpret the physical state of the system and to determine how well the expectations and intentions have been met. The gulf is small when the system provides information its state in a form that is easy to get, is easy to interpret, and matches the way the person thinks about the system.” – Donald Norman in ‘The Design of Everyday Things‘, Doubleday 1990.

I’ll argue that the gulf of evaluation is light years wide in the case in question. I’d like to have some transparency please. Show me a proper address!

Another solution would be to develop a plug in for e.g. Firefox that would identify addresses from services like tinyurl and urlTEA, look them up and show the complete address in the status bar below left and as a tool tip when hovering with the pointer over the link. I’ve illustrated how this may look below:

Here’s a another perspective on URL shortenings from Jeff Atwood of codinghorror.com