The rankings show, I think, how influence is different from popularity, nothing more, nothing less. If you add up a load of popularity figures you get a different picture from really digging deep into citation analysis (and input/output analysis and automatic sentimenting which I know Onalytica uses).

I also made the point that it isn’t a publicly available metric so you’re right, it’s something that would definitely form the basis of a blogger relations programme and whereas it is a good indicator of influence from Onalytica, we don’t have access to their resources. But I would never expect
a decent PR company to launch a blogging campaign on the back of a few Technorati Authority and Yahoo Links figures either.

Regarding my index, well I’m working on automating it (which is why it hasn’t come out in a while), but I’d question what you mean by it not being ‘authoritative’? Do you mean because it doesn’t have enough entries on it? Or enough metrics? Don’t think for a moment that I truly believe either the index or myself to be authoritative but I’d like clarification here. And in fact I’m questioning the ‘need’ for my index given that the Power150 is so comprehensive and has been adopted by Ad Age. In truth, I only published it
in the first case to get an idea for how such an index created from my PR blogroll would look – don’t forget, on the very first edition I was virtually at the bottom!

I like the Power 150 because it helps me discover blogs I didn’t know about before and it is automated to give me a view of where a blog is relative to others at any given moment. it also has new cache of authority with the AdeAge partnership.

The Onalytica ranking is simply an ad for the capability of the company. I argue that assembling a list using citation analysis is a great way to start the process of building a relevant list for say, a blogger relations program. I don’t think it should become a defacto for ranking bloggers overall.

And your ranking, while nice for the ego and interesting, doesn’t do much else in that it is neither automated or authoritative.

One reason for my blog shifting rank significantly is I probably talk about public relations, far more than I talk about PR. In fact I only tend to use PR to help with SEO (and then only when I remember). I personally don’t like PR as it can also stand for press relations, where as public relations makes it crystal clear you are talking about a much broader management discipline.