I just came across a new tool called 30K (
www.30k.com/plugin). They also created a plugin but it seems to do a lot more than wheretocredit - it shows award and status miles, you can personalize your searches by adding your memberships and status, includes elite bonus and also progress towards your next elite status level. It also shows which fares can be upgraded with miles. Not to mention the much better design and experience
^^^