What does Akismet catch your site on?IP?Comments?

What does Akismet catch your site on?IP?Comments?
my new site again was caught by akinsmet.
i used different ips on each blast.
each blast had no duplicate domains and urls.
comments were different in each time.
so how did it caught my site.
this is the third domain which has gone to trash due to akismet.

Akismet or Automattic Kismet is a spam filtering service. It attempts to filter link spam from blog comments and spam TrackBack pings. The filter works by combining information about spam captured on all participating blogs, and then using those spam rules to block future spam. Akismet is offered by Automattic, the corporation which employs most of the main developers of the Free Software weblog platform WordPress. Akismet was launched on October 25, 2005. Akismet is said to have captured over 18.1 billion spam comments and pings as of September 2010.[2]

I have been using Scrapebox not only for backlinks, but for Clickbank promotions as well. Additionally I have found CTR is about 4X better for moderated blogs as opposed to auto-approve. I always use fresh proxies and run 2-4 instances per night. My CTR has dropped to 2 (from 100+) within the last few days. My proxies are fresh, my comments are not and neither are my affiliate links.

I think Askimet looks at everything and to get around them you need to rotate comments and URL's. - IMO

The IP is irrelevant. You can be identified faster if you are using the same batch over and over again but what really buries you is your domain. Once that domain is reported as spam enough times you can't use it anymore.

This is the actual weakness of the plugin, you can easily akismetize whover you want.