alt131 - 9:03 pm on May 9, 2012 (gmt 0)
Hi mihomes, I understand you are wanting to know if class/id names in the document affect SEO, rather than discuss class/id naming conventions. That said, I'll still second g1smd's advice to name for function not form, and to use naming conventions that are intuitively obvious to others - you just never know what the future holds.
To my knowledge, as we speak there is no known connection between seo benefits and class/id names. An obvious reason would be rewarding (and therefore encouraging) multiple nested id-ed elements with multiple class names.
That would directly defeat g*'s claim to be working to improve coding standards - so I'm wondering what "changes" prompted your question.
That said, has anyone ever done any tests like:
(a) Using self-evidently unacceptable id/class names (eg, obscenities, or words that would trigger most word filters)
(b) Stuffing the :before/:after pseudo elements and styling them off the page.
Note, not suggesting these things - wondering if anyone ever tested the impact.