I've found that 90% of those things are actually important to me eventually. I try to use about 20 minutes of e-mail processing time a day to go to the links and do a quick scan of the material. If it's something I have any hint I may want to watch or read later I use the clip-o-tron to send the mail message to my Omnifocus inbox where I then add it to a project of reading misc notes as an action.
I also have told repeat offenders of forwards of junk mail that I really can't deal with it.
Often the quirky and fun things that get sent to me by friends are important ways to stop and smile or take a break so I like to keep them around in a contained place so Ic an use them when I need a change of pace.
Oogie McGuire - Mac, iPhone & Omnifocus
OogieM on Twitter
Paonia, CO USA