Notability is *supposed* to be timeless, not perishable, let's recall.
DG raises an interesting writing issue, nevertheless. Remember Pownce?
This is the startup over which Andrew Lih went ballistic - with risk
of distortion in my hindsight, the point at the time was that Lih
thought a press release about a Silicon Valley startup was quite
enough for an encyclopedia article, while other disagreed. As things
now stand
http://en.wikipedia.org/wiki/Pownce
tells us it went down one of the startup routes, for a lifespan of
around 18 months.
That article seems fine, except that "The developers have also
created" should now read "The developers also created".
Pownce is clearly a footnote by now. One of WP's purposes is to host
such footnotes. So the writing issue boils down to reducing froth to
footnote coverage.
Charles