Yahoo Site Explorer shows 985 inbound links for 327 pages on onlinegamblingpal.
For the top rated site in Google UK (onlinegambling dot co dot uk) YSE shows 122,500 links against 221 pages.
If you were showing in #5 for ‘online gambling’ then either:
1) you’ve lost a lot of backlinks all of a sudden (ie they’ve been discounted / removed) or
2) it was an anomaly (985 links wouldn’t get you in the top 50)
Keep getting good links. Due to future uncertainty, I wouldn’t be buying too many at this time.