Depending on which email you use, most of them will let you set up filters for your mail. In Yahoo! mail it's under Options. For example, I have a filter set up so that all mail from one friend who I love dearly, but sends me a ton of "forwards", all goes into a folder with her name on it. And another set up with some keywords (like for those enhancers!) so that any email with those words go directly to the trash. I know they were pretty easy to do, cuz I was pretty much a newbie at the time I did mine.