They also can see the origin of Google users who visit their page and sign up to advertise their services to users of Google's search and maps.
他们还可以看到访问他们网页的谷歌用户的背景，并向谷歌搜索和地图服务的用户发布他们的服务广告。
2
The ability to search across all users isn't immediately exposed on the site but you can visit a page like this and add that search box to your search bar.
还可以做到能够搜索到所有的用户，而又不必即时登陆到那个网站。你只要访问类似的网页，如a page like this，并把搜索框添加到你的搜索栏里就可以了。
3
Visit Google Maps and paste the link you copied into the search box.