Hi Sam,
These forums are often plagued by spammers. There's an antispam filter in place, but it doesn't always work as well as you'd hope. Using a CAPTCHA might help, but those are pretty easy to get around if you really want to. I've suggested that we should use
a rate limit on the number of threads you can post in a given minute, but that hasn't gotten any traction either.
If you see a spam thread, use the 'Report as abuse' link under the post and submit it as a spam thread. We used to have dedicated threads to report these spam threads, but the reporting as abuse is the official method now:
http://social.technet.microsoft.com/Forums/en-US/cbd411c0-c4d4-4b7c-aa5d-89e7d0166eee/how-to-report-spam?forum=reportabug
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