I try to check for new comments and trackbacks every day. And I find that spam out numbers real information about 100 to 1. Back in the day, spammers actually registered real domain names. Now I find that 100% of my spam comes from free web hosts.
I know that I should have more sympathy for people on a budget. But with good hosting plans available for $60/year (a domain name will run another $10/year), the savings from a free web host is a false economy. Just like real estate, a small place in a good neighborhood is better than a big place in a bad one.