Here are some great domains up for sale. Yourwebguides.com would make a great web tutorial domain. phptalks.com could make for a great PHP forum. Setalks.com and SearchEngineTalks.com could be used as a Search Engine Marketing forum. WHtalks.com could be used for a hosting forum.

GoDaddy
yourwebguides.com | 09/20/09 | $50

Moniker
phptalks.com | 12/02/09 | $50
setalks.com | 01/05/09 | $75
whtalks.com | 12/29/09 | $50

setalks.com also includes searchenginetalks.com | 01/06/10

I will bundle phptalks, setalks.com, searchenginetalks.com and whtalks.com - 4 domains for $125

Payments made via PayPal. Domains can be pushed to winner's account with appropriate registrar.

Those are really nice domains. Not a niche I look into but I wish you all the best.

whtalks.com - SOLD

will bundle setalks.com, searchenginetalks.com, tldtalks.com and phptalks.com for $50.