This link is very interesting:
Dead Link Removed
As to enforceability of judgments, each jurisdiction will have its own rules and procedures, but I expect that generally any enforcement actions will be similar to where I live - it will need to be initiated (and paid for) by the party trying to enforce the judgment. I doubt that there are many government departments out there that will automatically do the work, for free.
That being said, most jurisdictions will have procedures that will aid the party seeking enforcements (subpeona to debtor, court ordered sales, garnishee procedures, registration of charges against title, etc.), but the procedure to make use of those tools will require effort and time and money.
I think that there are some governments out there that cancel business licences and take other steps to stop a business from continuing when they have judgments against them, but that is no guarantee that any such judgment will get paid.
I would hazard a guess that the majority of judgments are never fully paid. If the judgment debtor doesn't have assets you can attach, it is most likely what is known as a "dry" judgment, and isn't worth anything.
With respect to limited liability corporations and partnerships, you need to remember as well that it is the corporation or partnership that owes the money, not the individuals that are associated with it. In order to collect against those individuals, you have to have a judgment against them personally.
In my jurisdiction, the Small Claims court is prohibited from hearing fraud claims - you have to go to the superior courts.