Fellow Viddler and friend Kyle Slattery is reworking his tag search pages. He’s created a really nice way to filter through the various types of content on his site based on tag search results. For instance, going to a tag search for my name will result in a few photos and a few links that he tagged with my name. You can then filter those results to only show you the photos or only the links.

But what if you hack the URL and search for a tag that shows no results? At current Kyle shows an error page. However, there was no error. His Web site should never link you to a page that doesn’t return any results (though it does right now). So how did the person end up here? They may have done a search, they may have hacked the URL, or someone else linked them to this page. Which ever way they ended up on that URL – there is still no reason to show an error.

This brings me to why I call these types of URLs “These aren’t the droids you’re looking for URLs”. These are URLs where you know what the person is looking for (droids) you just don’t have any. In the example URL I use above, a tag search for my name filtered by entries, Kyle does a good job of stating that there are no entries tagged with my name. This is much better than showing an error. In the other example, of a tag search that ultimately returns no results, he should do something very similar. This isn’t an error. There is just no content on his site that is tagged with ‘asdf’.

One of the suggestions I gave to him was to do a search through his own tags and try to see if, perhaps, they’ve mistyped the tag. I’m not sure what ‘asdf’ could have been, maybe sad? Or, what if someone spells my name with two Ls? This isn’t easy to program against – but there is an easier option that he could set up. Offer a search box with the tag that they entered already filled in and show a message of “Sorry, but I have nothing tagged with ‘asdf’. Maybe you misspelled what you’re looking for?”

My site isn’t a good example of best practices here. It used to be. But I had to hack WordPress to bits to get it to work last time and I’ve since upgraded WordPress too many times for those old hacks to work. However, if you’re looking for good examples – I’m sure Kyle’s site will end up being a pretty good example soon enough.

Have you seen any really good examples of this?

My 404 page consists of a simple message asking you to contact me to let me know that something went wrong.  There are a lot of services that do much more than simply display a typical “Page Not Found” message, and today we’re going to look at Brightkite‘s “smart” “profile not found” pages.

Brightkite knows how their user’s are using the system.  An example of this was brought to my attention by my coworker Kyle Slattery.  He told me about Brightkite’s ability to detect when a user does not exist on Brightkite, but may exist on Twitter.

Brightkite and Twitter share the same prefix for username detection, the @ symbol ((Other services, like Pownce, use the ! exclamation point.)).  Since Brightkite knows that some people use their system as a geo-enabled Twitter client, like I explained the other day, sometimes you’ll find people “talking” to or about people that do not yet have a Brightkite account. Kyle gave me the example of the username @mikemangino.  That username does not exist on Brightkite but it does on Twitter.

Here is what the profile page looks like on Brightkite for this user.

Rather than show their typical 404 error page, Brightkite asks if you are looking for the same username on Twitter, and even gives you the option to invite that person over to Brightkite.  Kyle thought this was “brilliant”, and I do too.  Kyle was wrong about one thing though; Brightkite’s “profile not found” page isn’t as smart as he might have thought.  Here is what Kyle said:

“Brilliant, if you go to a user on BrightKite that exists on Twitter, but not on BK, there’s a link to invite them, not a 404.”

I don’t think Kyle actually meant to say that Brightkite detects the user on Twitter, because they definitely do not.  But I just wanted to be sure it was clearly stated.

Brightkite’s “profile not found” page is smart enough to know that people are probably on that page because they clicked an @username to a Twitter account and not a Brightkite account. And that is indeed brilliant.  It is a great example of how Brightkite is continuously showing themselves to be “in touch” with how people use their system which makes Brightkite a joy to use.