Is there a good site to use where I can find odd jobs for programming?
I am talking about a bit of HTML here, some C# there - small apps and so on.
"Nugget work", if you will!
Edit: Made it a community wiki because I don't feel there will be one super-right answer, there might be a bunch of good options suggested
In the UK, Jobserve is the site for both contractors and permies.
It might not be fully established yet, but I suspect that jobs.stackoverflow.com would probably be a good starting point. Certainly for those looking for contracts with/from people that are aware of, and participating in, the coding scene (well, insofar as 'scene' is applicable...but you know what I mean).
Jeff's Stackoverflow-blog post on the subject: http://blog.stackoverflow.com/2009/10/introducing-stack-overflow-careers/.
Both Freelancers.net and No Agencies Please have a strong UK focus, though there's often some duplication between postings and you'll see the same stuff on both of them.
You could try websites like Elance, Guru.com, oDesk, etc but the rates offered on these types of sites are usually ridiculously low and seem like they're not worth the trouble. Personally, I'd recommend staying away from these.
Jeff Atwood has a good blog entry on these types of sites, Can you really rent a coder?
No, there is no good site. All the ones named only have low rates and zero interesting jobs. They probably work well for programmers in India who want to do some work for European companies. You do not want to compete with them, as your living costs are much higher.
The basic problem is that the people having the right jobs do not use the web directly to find people capable of doing them. You will probably be much more successful adding a sentence to your LinkedIn account.