What are some alternatives?
When comparing NearlyFreeSpeech.NET and Rackspace, you can also consider the following products
HelioHost - Community powered free hosting for everyone.
AWS - Amazon Web Services offers reliable, scalable, and inexpensive cloud computing services. Free to join, pay only for what you use.
000webhost - Zero cost website hosting with PHP, MySQL, Cpanel & no ads!
DigitalOcean - Simplifying cloud hosting. Deploy an SSD cloud server in 55 seconds.
RoseHosting.com - Fully managed Linux VPS hosting provider
Infinity Free - Infinity Free is a free web hosting company. You can 3 websites for free.