This was the error we were seeing in the console:

"An invalid form control with name='' is not focusable."

Not extremely helpful but I persevered. After digging into this error more I noticed it all boiled down to the HSB values that were being submitted when changing the hex value. When a hex value was set, RGB and HSB are set according to the hex value, but all the inputs in the colorpicker plugin have a maxlength of 3. One of the values being set for HSB was a decimal (e.g. 68.45641) longer than 3 characters. This then caused webkit browsers to prevent the form being submitted and throw the previously mentioned error in the console. So to correct this problem when the fillHSBFields function set the value of the HSB input fields we performed parseInt first.

The fix we applied needs you to edit 3 lines within the fillHSBFields function.

Change

.eq(4).val(hsb.h).end()
.eq(5).val(hsb.s).end()
.eq(6).val(hsb.b).end();

To

.eq(4).val(parseInt(hsb.h,10)).end()
.eq(5).val(parseInt(hsb.s,10)).end()
.eq(6).val(parseInt(hsb.b,10)).end();

Thanks to @ciaravino for spotting the error in the first place!

This new system learns as you use Blurtit building a list of questions it thinks you would be interested in answering.

Analysing the keywords (and phrases) in the questions you ask, answer or view, the system finds similar questions that need answering. Feedback is also taken when users hide questions.

This new feature will be slowly evolved and we believe will become a cornerstone of Blurtit. As always, feedback most welcome please.

“Suggested Questions” Walk Through Video

Suggested Questions On Blurtit from Tim O'Shea on Vimeo.

Three years old in June 2009, Blurtit is Mindcom’s flagship website. Blurtit is experiencing rapidly increasing traffic through the organic growth of its question and answer database and membership. Moving forward we are focusing on providing a seamless and positive user experience, whilst building its knowledge database of answers for all to use in the future. This answer based content is different to the factual based “Wikipedia” style information and more a personal opinion on questions which may or may not have an exact answer.

Mission: To provide answers to peoples questions online

Vision: To create an endless database of answers, giving personal views on common questions that people need answers too. By letting people ask, answer and interact through websites we aim to create a master database of information. We believe 20 million questions answered would be a start on our vision.

Give it a try, ask and answer questions at Blurtit.com

Traffic Stats

• 1+ million questions asked, and 900k+ questions answered (June 09)
• Traffic stats: June 09 Unique Visits 8.5M (9.5M visits)

Core Technology

• Learning technology – Our unique question suggestion technology learns as you interact with Blurtit building a list of questions we think you would be interested in answering.
• Twitter integration: Blurtit is fully integrated with twitter,  you can publish questions on blurtit by sending them to @blurtit we will tweet you back the answers as they come in. We also actively search the realtime twitter stream for questions we have answers to and when we find one we tweet back the best answer.
• Open contributions: You don’t need to register to ask and answer questions on Blurtit. To filter out abuse and spam we use a number of different methods including some funky semantic analysis to auto moderate a large percentage of our 10k+ daily contributions.
• Auto categorization: Contributions are automatically categorized and placed into our 1500+ categories. Auto categorization significantly stream lines the asking progress while keeping the site well organised.

Keep Up To Date With Blurtit

• Mindcom Blog – covering Blurtit and Mindcom news (RSS :: Twitter)
• Blurtit Blog – covering feature developments on Blurtit
• Best of Blurtit – Interesting questions (RSS ::Twitter :: Facebook)

• Scale out, not up (ie, more servers, not bigger servers) by partitioning users off
• Scale databases both horizontally and vertically (eg, split users horizontally, questions on dedicated db)
• Hide partitioning from the application
• Problems of denormalization (copies of the same data)
• Push non-realtime updates to a queue (ie, look at which DB updates to the ‘master’ can be delayed)
• Cache appropriately: strategies vary depending on lifetime and changeability
• Don’t rush out new features: scale from the start

This is a list of links to guidance on linking adwords and other useful statistics into analytics.

Scott MacVicar
Namespace
Late Static Binding – static functions compiled in runtime
Garbage Collection
ini handling – user-defined php.ini using FCGI
Limited GOTO
?:
pspell -> enchant
MySQLnd
phar
SQLite3
New Constants – __DIR__, PHP_DEBUG, PHP_MAXPATHLEN, etc.
Slides: http://talks.macvicar.net

David Soria Parra
dsp@php.net
http://blog.experimentalworks.com
Like RAID striping – improved concurrent access, little redundancy
Put all related data on one shard
Scaling: how to add another shard
Works on EC2
Use memcached for reads
Denormalize to solve join issues (since JOINs not allowed)
Search is a big problem
Use pre-caching
MySQL proxy

David Axmark
Sun colleague: Brian Aker
Drizzle: cut-down, modular version of MySQL
ACID compliant
Asynchronous comms
Bad INSERTs cause an error
Less locking
Slave enhancements
Needs more test cases

Hank Janssen
hjanssen@microsoft.com
Microsoft: http://phponws2008.com
http://bizspark.com
http://ilivetocode.com
http://windows.php.net

Mihai Corlan
FLEX Applications
- on Web browser
- needs only HTML, Javascript, CSS, Flex
- REST services/Web services
AIR Applications
- on Desktop
- communicate with PHP Server using remoting (call)
http://www.corlan.org

Chris Shiflett
http://shiflett.org
Observe behaviour, try to accommodate it
Incorporate ambient indicators
Use a login seal (specific to a user) for anti-phishing, eg, Yahoo
Change Blindness: not seeing what has changed on a page, very likely if a page reloads with very similar content.
Handing over 3rd-party password: BAD.  Use Facebook Connect (XSS model), OpenAuth (Google + PECL support) or OpenID.
Keep privacy and security options simple.
Provide a feedback mechanism for problem-finding.
Be aware of iframe attacks (eg, Twitter dont-click) to dupe user.

http://www.techradar.com/news/internet/find-out-how-google-indexes-the-web-600281