This is something I just discovered as an added benefit of Brian switching to Google Search on the site.
Chrome has built in functionality to accumulate searches from sites so that you can type in the url of that site and a phrase and it will use that site's search. Obviously, Google's search is going to incorporate this feature to allow Chrome to easily find these for us.
Try this out, open a new tab (Ctrl+T), start typing "mgoblog.com" (you only need enough to make the autosuggest bring up the site, I only need to type in "mg"), and press tab. That will bring up "Search mgoblog.com:" in your navigation bar. Then, type in whatever you want to search for. I tried Kris Frost. Press Enter and you will be brought to MGoBlog's search page with results for your search.
Similar functionality can be accomplished in Firefox with the search bar in the upper right, but seeing as I don't run Firefox anymore, I don't know the exact steps to add MGoBlog to it.
NOTE: You need to do a manual search on the site for Chrome to allow you to do this.