1. Find recs/trustworthy authors/trustworthy sources for fic.
2. Be cognizant of interesting premises that might be more fun as a surprise (i.e. genderbending, mpreg, secret identities, blind dates, and so forth...).
3. Don't read them. File them into a "To Read" folder for a rainy day.
4. When it strikes your fancy, pick stories out of this file at random. Don't read the summaries, pairings, or warnings. Then just -- go! Read! Reap the rewards of surprise.
This really keeps shit fresh and exciting for me, and I think perhaps I am better enjoying the story in the way the author intended -- before I am "spoiled" by all the header warnings. I know headers also work to keep you away from fic you wish to avoid and draw you to fic you prefer. But it's nice to be in the dark sometimes, and then stumble upon enjoyable things as if by happenstance.
Speaking of enjoyment, I'd like to take this moment to thank all the fanfic authors on my flist. You rock me. I can tell it's going to be a good year in fandom.