It's great when it works. But the cases of "please see an agent" are fairly frequent, and the web services folks still have not been given information on troubleshooting (as of last week). They're still in data gathering mode.
The fact that many will say "it worked for me" doesn't change the fact that it still fails in many cases.
Cheers.
It may have failed for others, has not for me ever. Been using it from lhr for a while.