It says:
Since its public beta launch in January 2008, NeXplore Search has steadily grown its user base, surpassing one million unique visitors in both May and June according to web-analytics company Compete.com. For its meteoric growth in traffic rank, NeXplore Search ranked 7th for the week of September 15th on the Movers & Shakers list compiled by Web information company Alexa.
They are still in Beta… In October 2008 they released the current, updated version.