Yes, it's helpful. Just like buying a lottery ticket theoretically means that you stand a chance to win $x^n.
If you can get some interest, then by all means go for it. I just think that you will find that the "exposure" is worth less than the effort required to gain it (and I recognize that the effort is low).
Well I've gotten plenty of exposure, I just thought the small effort might go a long way. Plus like I said, it just seems like a good boost we could help each other with.
Once it's on Digg, it usually ends up syndicated on many other sites, and generally the word gets out. It helps a lot with inlinks, blog posts, etc. This just seems like something simple we could all provide for each other.