I have anything sent to any address at my vanity domain forwarded to gmail. I use the name of the website and add e.g. ".shop@mydomain.tld" or ".bank@mydomain.tld" so I can apply different labels to them in gmail. It works great except I chose a .info domain which some sites don't recognise as valid.
I should also have said that this system means that for forums I feel safe enough using the same password on all sites as it will never be linked with the same address. (I still use a different (predictable for me) password for banking/ecommerce websites)
