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I'd like to help, but i'm not sure exactly what you mean... what kind of "statistics" are you looking for - traffic/technology/size/other? ...and top 10K for which subject, which country, what should they have in common?
Regardless, i doubt that you'll find any list of 10K sites, but for some subjects or areas it's definitely possible to find stats on, say top 10, 50, or perhaps even 100. These stats are not always comparable though.
You might want to search around their site to see if there is anything there. The information probably became available by subscription only just like most of the web is becoming.
Regarding the counter.com, it's the same almost everywhere. The alexa link (is nice, although it :-) is alexa users only, Nielsen figures are Nielsen only, Comscore similar... there's really no worldwide all-inclusive standard in this field yet, i'm afraid.
But the more exact and narrow you can define your field of interest, the easier it is to find out if there are some usable figures for that area.
BTW: This thread seems to be duplicated:
If we concentrate on the US market, here are some recent figures:
It seems that the Nielsen//Netratings sites are currently being redesigned, so there is some amount of chaos and malfunction.
This link to the CyberAtlas Stats Toolbox [cyberatlas.internet.com] has additional interesting information and stats.
Usually, you will also be able to find useful stats at NUA Internet Surveys [nua.com] - a website that collects released stats from a variety of sources.
If you have a more specific query, feel free to ask anytime :)
Still small sites like alexa help me so if you know of any others ...
Alexa may not be famous but it's a pretty big site as sites go - I remember seeing somewhere quoted the fact that there are about 1.5 million Alexa toolbar users, albeit with certain skews to countries like South Korea. Their top 1000 is probably fairly accurate although not necessarily in that order. From a size point of view, note their association with Amazon and archive.org. They're also one of the more innovative users of dmoz data, integrating their own traffic rank into the data in a similar manner to the Google Directory with PageRank and dmoz data.