The Blognation network is in turmoil, with controversial founder Sam Sethi accused of various misdeeds which seem to be documented in some detail. There's an unconfirmed report from Debi Jones (who is owed money by Blognation) that Sethi has stepped down. (In the comments, Jones says the information is from "a Skype chat with the rest of Blognation’s current and previous staff".)

What traffic and potential revenue is at stake?

Adding up the numbers (below) from Blognation's ad page yields 692,974 impressions (page views?) per month. At a modest $3 RPM (not great, but also not always achievable for general blogging) that's a potential $2,076 (US dollars) per month. (RPM = revenue per thousand impressions, e.g. one ad at $3 CPM, two at $1.50 each, etc.) Of course that's just a static analysis; the potential upside depends on growth.

I've included Alexa's estimate of where people go by subdomain. The Alexa toolbar is probably used more in the US than elsewhere, so the skew vs. Blognation's numbers isn't surprising.

		Alexa	Impressions	Clicks
	USA	12%	195,801	218
	Germany	16%	146,078	214
	Global	15%	138,132	351
	Company Index	7%	121,795	29
	United Kingdom	10%	39,274	34
	Belgium	5%	28,375	120
	Ireland		14,142	38
	Italy	2%	9,377	21
	Canada	8%
	Russia	5%
	China	3%
	France	3%
	India	3%
	Japan	3%
	Australia	1%
	Updates	1%
	Jobs	1%
	other	2%