Yesterday was a very interesting day for Twitter. In short, Twitter removed the ability to see @ replies. Then they brought it back but in a limited fashion. The Twitter blog explained:
We're making a change such that any updates beginning with @username (that are not explicitly created by clicking on the reply icon) will be seen by everyone following that account.
Read that a few times. Neither here nor there.
Well, you might be able to see people who @ reply you or maybe not, it depends. That is why you might want to conduct a Twitter Search for your name and subscribe to the results via RSS. I do for both @seroundtable and @rustybrick (feel free to follow both).
To catch up on the Twitter action over the past 24 hours, TechCrunch posted a quality summary of what took place.
Forum discussion at WebmasterWorld and make sure to follow @seroundtable and @rustybrick on Twitter.

Comments:
Jason
05/15/2009 09:16 pm
I find that Twitter has outages, funny things happen with the site and sometime even messages don't appear then reappear. They are working it out.
No Name
05/19/2009 03:52 pm
Twitter seems to have alot of problems. I started using them but their servers are slow and trying to use it can become frustrating.