Earn Bitcoins as a regular income

Getting your monthly paycheck in Bitcoins is probably the steadiest way to earn Bitcoins. There aren't many organizations who would pay you in Bitcoins but there are some at least. And maybe there will be more as acceptance increases continuously. Gavin Andresen, core Bitcoin developer of the Bitcoin Foundation stated in this interview that he gets paid in Bitcoins. And chances are, that when your employer accepts Bitcoins they might be willing to pay you in Bitcoin, too.

Apart from being employed by a company or a non-profit you can be self-employed and get paid in Bitcoins. Being a freelancer has multiple advantages. You can for example earn Bitcoins conveniently from home by participating in this bitcoin affiliate program.

You can also work from home for others. Here is a list of sites where you can search job offers or where you can post an offer yourself. It's a very convenient way to earn Bitcoins, because many jobs can be completed from home.

WorkForBitcoin is a site where you can do both, post job listings and search available listings. Many of the listed open jobs are related to programming. But there are also other fields and it's worth checking if there is something you are interested in doing.
Bitcointalk Forum Services Section is another starting point to look for job listings that are paid in Bitcoins. Some of the jobs are done easily within a short amount of time so it's a good way to earn Bitcoins quickly.
Jobs 4 Bitcoins on reddit has a focus on job listings for programmers. But again, it's not purely programming and it's definitely worthwile to browse through the different offers.
BitGigs is an online job board with many diverse job offers. The variety is reall amazing so go check it out.
Coinality has a different approach by not simply listing jobs where you can earn Bitcoins, but displaying them on a map. This comes in handy when you are interested in a local job somewhere near you. The number of listings could be higher but when it keeps growing it will become more interesting.
XBTFreelancer is another job board for gigs that are paid in Bitcoin. These jobs are mostly also software related. If you have programming or other IT related skills it is therefore probaly easiest for you to earn Bitcoins with your experise.
Then of course, you can start your own Bitcoin related business and earn Bitcoins this way. Either as a fully fletched business of goods or services or you could run a website and place ads from CoinURL. If you want to start or already have a brick and mortar shop check out the earn Bitcoins downloads. The flyer shows you, how easy it is to integrate Bitcoins payments in your shop.