During the recent Nintendo Direct it was unveiled that there would be a web portal that links to your Nintendo ID for Super Mario Maker that would allow players to tag levels and bookmark courses to play on their Wii U later on.
The web portal is now live and can be found here
A quick look at the site shows that finding good levels will be far easier now. You can search based on difficulty level, star rating, newest to oldest etc. but best of all are the tags. You can now specifically look for automatic levels, music levels, puzzle levels and many others. This will no doubt mean finding the kind of level that appeal to you is far easier are they are no longer hidden behind hundreds of levels where you watch Mario move around with no input for yourself.
Hopefully Nintendo will be able to put the tagging system directly into the game at some point soon but until then this is a great work around.