Should you bother with free directories of online paid surveys?
Not necessarily.
Sure, you might as well scan what you can find just to make sure you're not missing out on anything spectacular.
Overall, though, I have found the free lists lacking in a couple of departments.
They tend to be outdated, which isn't a big surprise. Most of the free goodies on the web tend to be well past their primes, it seems.
They also aren't well-vetted or comprehensive. You'll find some really weak offers listed and a man of the best ones don't even make the free paid survey lists.
That's why I work with sites that connect me with "the good stuff".
The free lists floating around everywhere are okay, but if you want to make any real gains with paid surveys, you have to go to the next level.