Virgin FAIL. Subscriber FAIL. Just FAIL!
Bit of a FAIL there by Virgin!
But to be honest, the biggest FAIL is on the idiots that think they NEED super fast broadband.
After 10mbit, probably much less you will notice naff all difference in the speed a website loads.
After that, few sites or services will actually enable you to make use of your 20mbit connection let alone 50mbit. Add to that, most routers struggle with much more than 20mbit - and few can really handle 50m bit.
So, your 20+mbit connection is mostly useless apart form all the things that your ISP will then throttle you down on anyway!
ISPs keep this quiet though, as they want you to spend out of fast broadband that you dont actually need or cant actually make use of - even if you have a perfect connection. Worse still, Virgin for example advertise their fast broadband as being ideal for downloading movies etc, but then throttle it back so much that if you do have a good connection, and find a fast download source, you will be throttled back anyway in less bandwidth than it takes to download a single HD movie. Now that is a con, Virgin!
To be fair though, and the reason why Virgin are saying this, is that a virginbroadband will (providing you have a Virgin fibre connection, a decent router and your websites/services can handle the speed) provide you with the full speed all the time (certianly in my experience). You just wont be able to use it - unless you spend even more and get the unrestricted 50mbit connection.