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http://www.01.com/
Email / Zimbra hosting from 01.com. Starts from about $50/mailbox/year. Optional "Legal Compliance" service that archives all incoming / outgoing mail permanently for $25/mailbox/year. Nice feature.
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http://www.seobook.com/wordpress-blog-hacking-checklist
Tips on how to both detect WordPress hacks and more importantly, prevent future hacks.
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http://getshopped.com/
GetShopped is a WordPressMU based ecommerce platform. It's initially free (limited to 200 transactions / month). No prices are available for the upgrades.
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http://www.instinct.co.nz/
Instict are the people behind GetShopped.com. They're a New Zealand based outfit.
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http://www.woopra.com/
Woopra is a free web analytics tool with a focus on real time analytics. Track visitors live, even talk to them in real time.
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http://ocaoimh.ie/comment-referrers/
The comment referrers plugin stores the HTTP referrer field when a comment is submitted and then adds it to the comment in the admin / email view. Helps to identify spam.
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http://blackhatbootcamp.com/listofwordpressblogs/
Black Hat Boot Camp have a list of (currently 64,724) WordPress blogs which can be searched or downloaded in plain text format, for free.
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http://www.ubuntugeek.com/monitoring-ubuntu-services-using-monit.html
A howto on setting up monit on an Ubuntu server. Fairly simple and straightforward. Includes basic info on customising alerts and so on.
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http://blogsecurity.net/wordpress/blogwatch/blogwatch/
A list of vulnerabilities in WordPress versions. Very useful.
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http://www.tuffmail.com/
Tuffmail offer an exceptionally advanced mail hosting service. The feature list is very detailed and very technical. All accounts are monthly bandwidth limited (related to the disk limit). Starts from 1 account at $2.40/month.
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http://en.wikipedia.org/wiki/Comparison_of_webmail_providers
Lists webmail providers including a list comparing features such as own domain, imap, pop3, etc. Makes a useful list when looking for an outsourced mail provider.
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http://wpglamour.com/
WP Glamour sell premium WordPress themes and offer some free themes for download.
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http://designdisease.com/contact/
A design company with a speciality in WordPress themes. They designed a custom theme for WordPress.com. Custom designs start from $2'000.
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http://www.mailcircuit.com/
MailCircuit hosting starts from $10/year/account (minimum of 5 accounts) plus $150 setup on your own domain. So $50/year plus $150. 10Gb mailbox, etc. They have a handy list of their competitors. :)
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http://www.bluetie.com/
BlueTie are a business email hosting company. Prices start from $5/month/user including 10Gb of space, virus, spam, calendar, etc.
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http://www.runbox.com/
Runbox is a mail hosting service, from $50/year, sub accounts at $20/year, extra domains $5/year.
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http://www.simplymailsolutions.com/
Mail hosting company based in the UK. Accounts start from £12/year for a 1Gb IMAP / POP3 / SMTP box.
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http://www.sysadmin.hep.ac.uk/wiki/DatabaseBackup
Useful article on how to backup and restore MySQL databases. Includes example commands and a basic overview of the theory.
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http://www.fusemail.com/
FuseMail is a hosted mail service which includes webmail, IMAP, POP3, calendar functions, shared files, groupware, and more. All for $2/month/mailbox. Great.
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http://reductivelabs.com/trac/puppet/
Put simply, Puppet is a system for automating system administration tasks. It's a language to define services, nodes, dependencies, and so on. Then it handles the "realisation" or "execution" of those definitions across multiple platforms, etc.
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http://www.capify.org/
Capistrano is a system built in Ruby to execute commands on many servers, in parallel via SSH. Config files, jobs, etc are written in Ruby.
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http://wordpress.org/extend/plugins/wp-css/
The WP CSS plugin combines multiple CSS files used by WordPress into one single, gzipped file for faster download, fewer connections.
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http://wordpress.org/extend/plugins/wp-js/
The WP JS plugin combines multiple javascript files used by WordPress into one single, gzipped file for faster download, fewer connections.
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http://www.linuxnetworkcare.com/
Linux Network Care are a specialist Linux server management company. They offer remote server administration, technical support, appliance management (cPanel, Plesk, etc) and so on.
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http://rack-admins.com/
Rack Admins are a server admin company which appear to be based out of Ukraine. Their charges start from $30/hour for administration, $60/hour for consultancy.
