The real telecommute jobs are often found squirrelled away in forums specific to certain frameworks or languages. Here’s a few that are useful to check:
http://startuply.com (click on ‘advanced search’ to filter for telecommute only)
http://jobs.perl.org (and Grant Street is indeed for real!)
http://telecommutejoblist.com (extracted from craigslist)
DevShed
CodeIgniter Job Board (PHP)
Drupal Jobs
WordPress jobs