Twitter (or Failover Twitter) runs on Google App Engine?
7920074.appspot.com
7920074.appspot.com
Opera reports that as Fraud
Certainly is a good clone, either that or twitter really liked the jaiku source code...
Mat
It might be just that - a proxy.
Googling retwite I found this project on github: http://github.com/int/retwite and this discussion: https://groups.google.com/group/google-appengine/browse_thre...
It may have been constructed as a dumb mirror initially, but variants could be trivially reworked in to phishing sites.
[Google] http://blog.twitter.com/ -> http://whois.domaintools.com/74.125.113.121
[NTT/Verio] http://search.twitter.com -> http://whois.domaintools.com/168.143.162.123
[NTT/Verio] http://twitter.com -> http://whois.domaintools.com/128.121.146.228