Also, as a side note: thank you tremendously for all of your articles on your website, such as on timers and counters and interrupts. That interrupt article is a godsend, and has helped me tremendously. I just released a new example in my Timer2_Counter library which reads in PWM pulses very efficiently on any pin, using pin change interrupts, at a resolution of 0.5us, and your site has been key. I point people there all the time.
Two weeks later and it's still password protected... The whole point of wikis is that the community can edit them If the Arduino staff isn't going to do anything about the issue then open it back up for editing and let the community deal with the spam. I for one am willing to put some time in deleting spam. What we really need is rss feeds for playground pages so that I can get notifications when a page is updated and immediately check for abuse. This appears to be possible with PmWiki PmWiki | PmWiki / RSS but from what I can tell it is not enabled on the playground so it will need some minimal effort from Arduino to make it happen.
if you need the password to change the content please write at webmaster@arduino.cc. Thanks for the hint about RSS. We are also looking at a captcha solution.
Insure you give yourself plenty of time to get a password for the playground. It takes at least a few days. I sent an email on the 6th. It is now the 10th, and I haven't received an answer yet.
I think what he's saying is he's going to remove the playground edit password, because now interested users (such as pert, based on his subscribing to the recent changes RSS feed) can more easily monitor and protect against spam by following RSS feeds to the playground. Interested public will now be the spam filters, because they can remove it as it shows up in their feeds. I think that's the idea.