Why a hashtag? A hastag is an agreed reference tag which can be used in different contexts and has gained popularity when using twitter. To use it for the group DNA project is the result of the usage of tags for barcamps. The group DNA project was started as an open initiative at a session on Sunday, 19 Oct 2008 at the Berlin Barcamp (#bcberlin3).
The hashtag inspiration has been a session on the previous day called glossr, which surpise has the hashtag #glossr :-) Check it out.
At the time of this writing, no wikipedia article has yet been published either for hashtag nor for hashtags, though they have been mentioned in the twitter article.
So go for it :-)
http://en.wikipedia.org/wiki/Hashtag (page has been deleted).
