This is not a permanent relocation (I suppose it could be if you married your way into the country) and I don't know if it can be converted into a long-term visa, but it would tell you pretty quickly if you're cut out for the expat life.
|Not a very "Irish" photo, but it's me on a ferry to Dublin|
- Don't be a felon
- Don't use drugs
- Don't have been deported from somewhere
- Don't suffer from communicable diseases
You will want to check their application for for this program (pdf) to get a better idea of what they're looking for.
If you take this opportunity, may I suggest checking out Ireland outside of Dublin? The folks I've met in Dublin were very friendly, but the city itself is not particularly attractive and there's a lot more to Ireland than Dublin.
Note that this is not the same as the Irish working holiday program, a program only open to citizens of Argentina, Australia, Canada, Hong Kong, Japan, New Zealand and the Republic of Korea.