"Since the news that the Live Arcade would be having its under-performing titles de-listed, the tubes have discussed at length many of the implications. In a response that seems absolutely inevitable with hindsight, someone has put together a list of XBLA titles that conform to two of the three criteria outlined by MS for a de-listing (Metacritic score of less than 65% and at least six months old).

The third criteria isn't accessible outside of Microsoft, and is the conversion rate, i.e. the percentage of demo downloaders who end up buying the full game. As we don't know what games have good conversion rates, the games on the list are therefore not absolutely guaranteed to be in danger. But if there are any on the list that tickle your fancy, now is the time to try them, as they're the most likely ones to leave the Marketplace."

Full Story & List: http://www.gamenewsdirectory.com/news-details/42787-list-of-potentially-delisted-arcade-titles

That seems silly. I can't imagine it being more profitable to take a game off the service than to leave it on. I can understand if they wanted to clean marketplace up some, but I'm sure there are notably better options than cutting off sources of potential revenue. The demo-to-purchase ratio would have to be terrible to warrent such an action, and simply disabling the demo would be a better option than eliminating content in my opinion.