PageRank

SBM

Googl PageRank を取得する API として Google PageRank Java API というものを見つけたのだが，２つほど疑問が発生．

  • toolbarqueries.google.com へ問い合わせるようだが，この使い方を Google は認めているか？
  • document によると
PageRankService queries google toolbar webservice and returns a google page rank retrieved from one of the next datacenters on the list.
toolbarqueries.google.com
64.233.161.100
64.233.161.101
64.233.177.17
64.233.183.91
64.233.185.19
64.233.189.44
66.102.1.103
66.102.9.115
66.249.81.101
66.249.89.83
66.249.91.99
66.249.93.190
72.14.203.107
72.14.205.113
72.14.255.107

とあるが，nslookup で調べると以下のとおり：

$ nslookup toolbarqueries.google.com
Server:		xxxxxxxxxx
Address:	xxxxxxxxxx

Non-authoritative answer:
toolbarqueries.google.com	canonical name = toolbarqueries.l.google.com.
Name:	toolbarqueries.l.google.com
Address: 74.125.153.99
Name:	toolbarqueries.l.google.com
Address: 74.125.153.103
Name:	toolbarqueries.l.google.com
Address: 74.125.153.104
Name:	toolbarqueries.l.google.com
Address: 74.125.153.105
Name:	toolbarqueries.l.google.com
Address: 74.125.153.106
Name:	toolbarqueries.l.google.com
Address: 74.125.153.147

結局，このAPIは使ってよいのか？ 使えるのか？