Yep, the directory needs your help fellows!
Apart from the links Basilisk has given you, here is another one: http://www.free604.com/unreleasedgoa/non-verified/ which has links to samples for tracks that need some verification if they were indeed unreleased or not, so that they will/will not find their way in the directory.
All info I have for these is:
* Slinky Wizard - no name (no further info)
* Oman - Rapzod (this is from 1996-98, not later, and was said to be from Finland, maybe it's O*men - Rajdoot from http://www.discogs.com/release/330463 ??)
* G.G. Guru - Looping World (this is maybe Gangguru ??)
* Ollie Olsen - Junerobo (sounds to me not later than 1996)
* Tim Schuldt - Plastica (I suspect this maybe is the track "Elastica" from http://www.discogs.com/release/195823 , can someone verify it is/it is not??)
* Ofer (Dikovsky) - Megamorphosis (again this is not later than 1998)
* unknown5 (a very early one, 1995 (or 1994?), doesn't sound to me like from an obscure artist, so this might be helpful)
Any help appreciated!!!
