I don't think it will ever become as bad as Webanswers, lol. I think, like Dan said, that HP is trying to get in on on the Yahoo! Answers cash cow. Unfortunately, the sheer age and size of Y!A will make it hard for another Q and A site to compete. Unless Y!A gets downgraded by Google, I don't think any other site is every going to reach their level.
Webanswers was trying to imitate Y!A, and it basically went belly up, that site is near dead and it doesn't even show up in Google any more. Luckily, HP is primarily an article site that does Q&A on the side. Personally, I like the addition of a "Best Answer" option like Y!A has; it motivates people to write better answers which improves the overall quality of the site. But on the whole, I think if you want to make money with HP your best bet is to focus on writing articles, not posting questions.