The FICO scoring model is still the same in the US and Canada, Monty. It was companies just like this one that caused Fair & Isaac to close that particular loophole.
What was happening was that companies just like this one were paying people with good credit to "lend their credit" to those with extreme poor credit. What they would do was take a poor credit client and add him as an "authorized user" to cards and lines of credit of people with years of solid credit history, flooding the poor credit client's history with good credit.
Voila! Instant credit score boost!
The problem was that lenders could no longer rely on the FICO credit scoring method to approve loans without running the risk of lending to somebody whose true score should be around 500 or so, so they were losing faith in FICO's scoring system.
FICO, to save their collective business hineys, re-wrote the scoring algorithm to not be affected by "authorized user" accounts.
The fact that paying off collections instantly slams your credit score because it makes the collection appear recent has been a known problem that "they're working to correct" for considerably longer, but it hasn't shaken the faith of the banking industry, so isn't costing FICO money... therefore it has not yet been fixed.
Banks unknowingly lending money to high risk people was threatening FICO's business. It's amazing how quickly they fixed that...:(