How can I establish which site is more relevant for some area, except for checking it's alexa rank and google PR? For example: Those HYIP monitors, they list sites that are relevant for investing and that really pay. When I was into those HYIPs some years ago, the top HYIP monitor was hyipinvestment.com and the "smaller" one was goldpoll.com. As I see it, their importance hasn't changed. But now, I see that: hyipinvestment.com --- PR:4 --- alexa: 53,566 goldpoll.com --- PR:5 --- alexa: 38,533 But I'm SURE that hyipinvestment is still more relevant; so I guess those guys from goldpoll raised their PR and alexa rank using some tricks and stuff. My point is: are there other tools to establish which one is better (I mean more relevant, more visited, more rated etc.) BTW, how can site that is ranked 53,566 in alexa - which is very good - have such low PR as 4?
Traffic as measured by Alexa is merely a glimpse at how many users with the Alexa toolbar have visited. It's really a pretty bogus number and does not necessarily imply actual traffic to a site. PageRank is a measure of the number and "value" of incoming links to a site. Again it does not always speak to the value of the content on the site though theory would say organic linking would improve PR. The problem is the "lesser" of the two sites could be buying more links than the "greater" of the two - so PR would be indicative in this case of inbound links, but not always value of the content.
I think it's your own traffic stats report. For my site, it's only 20-40 unique visitors per day, but got an alexa ranking of 230,981 and PR4. To make profit, the most important is traffic.
Alexa is still subject to plenty of people trying to fraudulently bump a site prior to resell, so be careful.