We've been working on a new project lately that you will probably have seen advertised in staff signatures around the forums.
The idea is to create a searchable database of SQL errors (along with their solutions). We were hoping to crowdsource the content here at the forums, but the uptake on that has been a bit slow.

Before I throw the towel in on the project I thought I'd give it one last go. Now I'm offering prizes for participation.

I'll give a free 12 month membership to Learnable to anyone that adds 2 or more errors to this thread. At Learnable you'll have access to the entire SitePoint library of books and courses.

That's a pretty good incentive...