My site suffered a PR drop from 5 to 0?

[NoahSEO]

Almost over night, one of my product page's PR drop from 5 to 0.
At first, I thought it might be Google's datacenter updating delay. But two days passed, PR remained 0, strangely, all other pages no affected at all.
I checked the "problem" page:
1. There were totally 140+ links, only 1 outbound link;
2. No keywords stuffing
3. The page still shown in Google SERP

I have no idea what happened, should I just ignore it?

[tedster]

If the page is still getting search traffic from Google at the same level, yes, I would ignore it.

[NoahSEO]

thanks tedster for the answer:)
I think I would do some more digging to find out the reason why there is a drop.

[tedster]

I do understand - but I'd also suggest that if your traffic quantity and quality has not suffered, then spending a lot of energy diagnosing toolbar PR may not bring you a good return on your time investment.

However, if it looks like Google has flagged you as selling do-follow links when you aren't, then that might be important to know.

[NoahSEO]

yep, I wonder if it's a sign Google want us to make some change, and we must prevent the same "punishment" to our other pages.

thanks for that suggestion.

[Spencer]

Hi NoahSEO,

Does your page contain any revenue generating links, if so check those sites for a PR change (up or down). If nothing, then I would agree with Tedster, monitor your page activity and only delve deeper if your activity has been damaged.

[NoahSEO]

thanks, Spencer

There was only one outside link on that page, and I've checked PR for that site, seems like everything is OK.

Anyway, I removed that particular link, just for testing.

[jimbeetle]

How would a -- legitimate -- external link on a page cause that page's PR to drop from 5 to 0?