Planet13 - 2:00 pm on May 6, 2012 (gmt 0)
How about a combination of platforms, blogs, forums, article marketing, directory listings, but from sites that are relevant?
All I can say is that the BEST links I ever got came "out of the blue" and they were due to the fact that I put on my thinking cap and created some good quality content that I new various media sources would find useful.
I would LIKE to think that link manipulation is dead (blog comments / guest blog posts / forum profiles / article comments / paid directory listings) because it is SO OBVIOUS why the links are there.
However, looking at my niche, google still seems to be rewarding them.
Hopefully that will be over soon.