Plummetting EPC after adding RSS

Added RSS, submitted to directories, EPC sunk

[vincevincevince]

It could be a big coincidence, but within a day of adding RSS feeds and submitting them to major RSS feed directories, my EPC has sunk massively.

Does anyone have any idea why?

[ZenArcher]

Has the ad targetting changed? Do you know which ads were paying a high EPC before the change? Without good click-tracking, these answers are hard to come by.

Any revision to your pages can change the relevancy in mediabot's 'eyes'.

[Nikke]

Dumb question, but have you checked your css compatibility with all platforms?

For me, it often takes several revisions before I get the niftier parts of my code to display as intended in both IE and Firefox...