That's what I gather, too. Looks like an added service is that they will notify you when similar marks to yours are filed. (found here: http://www.trademarkia.com/press-release.aspx)

I am interested in seeing how (if?) they implement that. A mark is more than words; It is also the colors and shapes that comprise the mark. I wonder how they will determine whether a mark is similar when someone picks a logo that looks like yours.

It doesn't seem like their claim of "Search all U.S. trademarks filed since 1870..." is correct. Trademarkia doesn't have the mark that I filed in August, but it is on the USPTO website.