To recap, here's the original posting (with an updated deadline):
With 5.1 having officially been in Release Candidate status since September 2007 and soon approaching GA status, the MySQL Community Team launches a competition for the users of new features of MySQL 5.1:
Submit your MySQL 5.1 Use Case Report to community(at)mysql.com by 30 September 2008 and have a chance of winning one of our prizes:
- 1st-3rd prize: A MySQL Conference & Expo 2009 Pass, including a dinner with MySQL co-founder Michael "Monty" Widenius
- 4th-10th prize: MySQL Community Contributor T-shirts
- 11th-20th prize: A Sakila mascot (MySQL's pet dolphin)
You may phrase your MySQL 5.1 Use Case Report freely, but the more colour you give it, the better your chances of winning.
By submitting the report, you also volunteer for appearing in our upcoming Use Case articles. We will consider any data you submit in your Use Case Report as public and quotable in our reports. However, you may ask us to anonymise certain aspects of your use case, should you otherwise not be able to participate in our competition.
This is the desired format of your submissions:
Cc: <any of your colleagues you wish to inform>
Subject: MySQL 5.1 Use Case Report: <Feature> / <App Name>
MySQL Community Team,
At <company/organisation> we've used <new 5.1 feature> since <date>.
We're now on MySQL 5.1.<n> and we started development using
<new 5.1 feature> with MySQL.5.1.<m>.
Purpose of our appication:
Reason we need <new 5.1 feature>:
Development environment, OS, language:
Deployment environment, OS, hardware:
Relevant metrics on size/type of application:
Our comment on how <new 5.1 feature> meets our needs:
- comments on usability of feature
- comments on clarity of documentation
- comments on performance
- comments on bugs encountered 
Our greetings to the MySQL Engineering Team:
Name and email of submitter / developer:
Name of organisation:
Geographic location (city, country):
MySQL Enterprise customer: (YES/NO)
 If you've found bugs, then please follow our bug reporting instructions and share bug numbers from bugs.mysql.com in your use case report.
We're looking for Use Cases on all new MySQL 5.1 features, but especially on
- Partitioning: Doc * Forum * Articles JonS & PeterG, RobinS, RS2, Giuseppe
- Row-Based Replication: Doc * Forum
- Event Scheduler: Doc * Forum
- Logs on demand / Table logging: Doc * Forum * Article Giuseppe
- Plugin API: Doc
- XML functions: Doc * Article: Bar & PeterG
- but also other improvements: Doc *Article Jay
- MySQL 5.1 Article Recap: http://dev.mysql.com/tech-resources/articles/mysql-5.1-recap.html