Hi Dartar, Kiba, Jason,
This is Micah Dowty, I run the CIA site. I only recently became aware of Ohloh, but I can say it does look like an interesting site. I had to try it out by adding CIA itself ;)
There is some overlap between Ohloh and CIA. However, as Jason noticed, CIA's primary goal is to deliver immediate notification and up-to-date feeds in a variety of ways. It happens that CIA can also be used to browse projects and to find relationships between projects and development communities, but CIA isn't going to be another Ohloh or SWiK or Freshmeat.
I've been thinking lately about how CIA should best relate with other web sites in this space. I've also wanted to change the site's name for a while. The name "CIA" is largely a historical artifact, and doesn't have a particularly obvious connection to the site's purpose. CIA needs to more clearly and obviously define its niche.
CIA is also in a unique position relative to most (all?) of these other web sites. CIA is still largely a one-man project, running on hardware and bandwidth I pay for out of my own pocket. CIA is a personal project started way back in 2003. It started out of necessity, and grew due to mostly-unsolicited popularity. I've been working on it off and on since then, but CIA is nobody's day job. Most of the site is still late-2003 era web design, and it shows. I've been working hard lately in my spare time to give CIA a much-needed facelift.
In short, I don't think CIA can or should compete directly with Ohloh. I do think that the two projects are complementary in nature, and any collaboration between us could only be a good thing.
--Micah