Yeah. An off by one error. If you input a string of three characters, then it complains that the input needs a name longer than two characters.

How about adding googlecode and bitbucket to the list of searched sites and providing links to the found projects at the searched sites?

Like the idea, but I'm having trouble interpreting the output. I searched for "stringer" (the name of one of my open source projects) and I see "npmjs" "sourceforge" and "github" with a neutral smile-y face - what does that mean?

I wrote something similar a good few years ago, and still use it:

http://blog.steve.org.uk/i_want_to_be_remembered.html

These days it lives in the Debian "devscripts" package, and it is still useful, even if it only checks against sourceforge, freshmeat, etc. (I guess freshmeat is dead these days.)

I entered several projects I contribute to that are hosted on github and registered with rubygems, and got smiley-faced github icons for all of them.

I'm not sure what it's checking on github.

It would probably make a lot of sense to check more of the popular package management hosts too (which all, by their nature, offer convenient API's for doing so). CPAN, Rubygems, PyPI, Bower.

Cool idea. Is that really the only 3 places to check tho? npmjs, GitHub & sourceforge? Have to admit I did this just to see what places there where. How about packaging systems for other languages, like Composer for PHP, PyPI for Python? Or even OS's, like the Debian package repository?

Great idea, but the web demo isn't working at the moment. Definitely starring this one though :)

getting a 404 on http://ivantomic.com/projects/ospnc/

See also: http://isvaliduser.com

Maybe add few popular domain name checks like (com, net..)

Cool Idea!! Using it definitely.