Click onto a gig you like and then up the top it says bookmark/like this gig. I don't know if this then adds it to your favourites, i'm just guessing!
You can then hover over the profile tab at the top of the page and click "Stuff I Like".
At the top of each gig click the "Like" button. This puts the gig in the "Stuff I Like" which is located under "Profile" or you can go here: http://www.seoclerks.com/bookmarks
yes you can do it by bookmark
Simply bookmark it