RSS and unique text

[Dimitar]

For all those RSS lovers how much % of the text need to be changed in order to be considered like unique. If there is tool that can compare two texts will be really helpful

tnx

[HotwivesOnline]

I would love to find a plugin that would analyze that, because it's something that's worrying me a lot lately. I just started using some sponsor/affiliate RSS feeds, and I don't want to get dinged from my SERP rank because of it. In fact, I'm thinking lately that it's not worth it.

[ronnie]

I think this is what your looking for:

http://www.seochat.com/seo-tools/page-comparison/