If your point is that your link with 7 upvotes was not promoted to the front page like another link with 7 upvotes, then... I'm afraid it's not rigged at all: t

If your point is that your link with 7 upvotes was not promoted to the front page like another link with 7 upvotes, then... I'm afraid it's not rigged at all: the rank algorithm has more inputs that just upvotes. Which should be obvious: otherwise the article that had the most upvotes in history would still be ranked #1.