Here’s a fun application built on the Twitter API and based on Twitter itself - Twitter Magnets. The concept is simple, you have 120 characters to create a poem that you can send to anyone. You get a randomized set of tiles at the start, but you can switch out your remaining tiles for new ones at any time to get new words. I chose to make a haiku below and submitted it to @twittermagnets.

If you’re interested in seeing what other people come up with, follow @twittermagnets and poems published will come up in their stream.

FriendFeed has a wealth of information crossing its public timeline each day. There are already methods in place to use the API to search for specific terms, but they’ve now added the ability to search on a domain or specific link. That makes it really trivial to build a daily digest of users who mention your website.

Developers can call the API in a few ways - either using CURL or reading the response directly into a variable. The response comes back in JSON form and there’s no option to have it come back as any other format. If you’re using PHP and have JSON libraries installed, you can do something like the following:

$response_array = json_decode($response, true);

Add true as the second argument to get the method to return an associate array, making it much easier to parse the response. The resulting array contains all the pertinent information you’d want to know about people mentioning links to your site, including publish time, the publishing user, the link they posted, all the comments and likes about the post, etc.

In a little under 45 minutes, I was able to create a daily digest for all links that point to microblink.com and all posts that mention microblink. The final step is to set it up in cron so it runs on a periodic basis. All results get emailed to anyone you want.

This is simple, useful way of tracking who’s talking about your website. There are certainly other ways to track that, such as Social Mention, but FriendFeed is another resource you can tap.

Tech Crunch reports that the Yammer platform has grown tremendously in its first week since winning top prize at TC50. Yammer CEO David Sacks says there are now 10,000 networks and 50,000 users on the platform.

In an attempt to prove their worth to many naysayers in the blogosphere, Yammer is now launching an API that will allow third-party developers to incorporate Yammer functions into their applications. The API is the same as what was used by Yammer’s own engineers to create the iPhone, BlackBerry and Adobe AIR clients, so there should be no doubts that it will work.

It seems that many people were upset with Yammer winning TC50 this year, citing the company as “a Twitter clone,” but the way in which Yammer is using the microblogging platform and the adaptations they have made to take it inside the corporate environment are what really set it apart.

With the release of the official Yammer API, Seesmic has announced it will be building support into its Twhirl desktop app, which thousands of users are already using to access services like FriendFeed and platforms like Twitter and Identica.

We created a network on Yammer after the TC50 event and have been using it to debate story ideas and pass links around. Our three members have posted 42 messages so far.

Rejaw, a new microblogging service, had been the topic on several Ping.fm users’ minds and was recently added to Ping.fm’s suite of supported services. Since the Rejaw API has been available to developers since the platform’s launch, the Ping.fm team was able to add support in a few hours.

What does this mean for users?

• Microbloggers have another account they can sign up for
• Ping.fm makes it easy to post to if you don’t want to use the Rejaw web interface or other apps

The problem that still remains, and is present with each new microblogging service that emerges, is keeping up with the network and conversations taking place. Socialthing can help as an aggregator of feeds from these platforms, but they don’t support Rejaw yet.