[Tagging] Announcing: website key integrity checking

[Bryce Nesbitt]

KeepRight, at http://keepright.ipax.at/
now validates "website" tags on ways and nodes.
The script loads each page and performs a fuzzy match...
a restaurant for example needs to match on name, phone number or address 
(any one will do).

The script also checks for hijacked domains, though this detection could 
use additional match strings.

The "http error" check could use some help also: many http errors are 
transient, which leads to unfortunate flagging of non-problems.