Most servers were quickly fixed once news spread. Individuals can check themselves. Here are some exchanges I tested which are fine from the heartbleed attack:
This being said, I see a lot of exchanges with other security concerns that need to be fixed.
Please do not leave your Bitcoins in a hot wallet or exchange until security is taken more seriously. Make the trade and get out.
Most exchanges should have responded the first day. Good to see it confirmed that the SSL bug is fixed on all of those. I wonder if many hackers knew about the hole, or only "the Gov" was using it?