The most welcoming Nebraska town I've moved to (near) was Dunning Nebraska. County seat/biggest town in Blaine co., population about 80. Job opportunities are slim.

Anything bigger than that and you're probably going to have some of that small-town stand-off-ishness. I won't say that they don't want new blood, it's just that most small towns in rural Nebraska are on a decline (the same is not true for those within 50 miles of major cities). People are naturally a bit hesitant to get close to someone who's probably just going to move...
Big towns (in my mind, that's abou 3,000 and up) and you're not going to see that so much. There are more job opportunities and less outward migration. There are also more social exposures as there are more clubs and organizations to get involved in.
In a truly small town, though, the best way to meet people in at church and the local bar.
