I recently decided to drop one of the domain names that points to my blog. After (finally) getting the proper domain (pedroassuncao.com), i figured there was no sense anymore in keeping the old one (diffract.me).

Now here's the problem: A lot of google links that bring a huge percentage of my traffic are pointing to the old one. That explains why - from last week to this one - i got a 90% traffic decrease in visits and page views. I definitely should have done something to prevent or at least minimize this "problem", but i didn't.

So my question is: What could i have done? Anyone out there has had this problem before? If so, what did you do to mitigate it?

UPDATE: Thanks for all the comments, that was really helpful. One in particular (by Ryan) explains a nice solution really in detail.