Strange link list on Google's site

What is this?

Re 45 ONs + 0 U 5 E gO 0 g L e

There are lots of things I do not really understand.

Details are as follows.Google H4 x 0 r

Other than this.

Nostalgic

Mysterious registry

Mysterious Registry Part 2

What link is ...

Is this all ...? Premature exercise site of new kind of service?

CURRENT Communications Start Page

Character code is strange

Google's sitemap, discount

It seems to be Mozilla type

That for mobile?

Blank

Mother's Day

Mother's day part 2

May 1998

Is it a prototype of a translation page?

Google Viewer?

Leopard

What on earth are you going to use for these things? Also why are there so many meanings unknown?

Pipes Network Clog: March 03, 2006 Archives

According to the above site,Search like thisOther than that I seem to find Iroiro.