There is no such amount as "enough RAM."
- Basho Technologies Announces Anticipated Release of Riak 1.0 - One of the NoSQL databases I'm most interested in at this point. The release candidate bits are here.
- What good Web Developers should know about sending E-mail - Some of the basics to deliverability, though any more I just recommend paying someone like SendGrid to take the headaches for you.
- GemStats.org - Project to collect and analyze Gemfiles. Not really clear what the data will be good for other than a popularity contest, though.