It sounds like a good idea. In my experience, most of the people who find long term partners via internet dating sites are financially stable, emotionally mature and able to identify both what they're looking for and who they are; in other words exactly the kind of person we're probably all looking for.
I'm sure there are untenable and undesirable people also joining the sites, and they probably don't meet with much success, but you sound very much like you fit into the first paragraph category.
I'd certainly be interested in any stories guys wish to share as to how they've used the internet to find a long term relationship. My reservation with a dating site in china would be a fear that it would just put me into contact with naieve immature 'girls' who want to marry a westerner and have beautiful babies.
Every now and then I go to the things I'm interested in (mostly concert (classical) music) and see women who, by dint of their being there, share an interest with me, and I'd love to have the courage to go up and talk to them. If any of them smiled at me I probably would talk to them, but I don't smile at them first, as I unfortunately look like a dangerous predator when I form my mouth into that unfamiliar contortion. The other problem is that if they're Chinese, they're probably married. Honestly, if they're western, they're probably married. If there was a way of using qq to find local women who fancy having someone to go with to what passes for concert music in my city, that would be great.