Did you know that you can earn for the blogs you maintain. Its a simple concept, sign up to the adsense google programme. In turn Google will display ads on youir web site and if people click on these ads, google pays youi. Cool deal man. People became millionaires through this programme. And many are earning hefty cheques using the same facility.
The main challenge for you would be to attract traffic to your web site. If your web site has a traffic of a few thousand per day, you could well ditch your job and start blogging full time and make a decent earning.