When careers was originally released, when there were no employers around and it wasn't even complete, there was a "promotional" deal for early adopters. Stack Overflow friends jumped in out of their trust and love to SO. Careers pricing has changed significantly since then. However, instead of going up, it has practically went down. This, of course, contradicts what has been promised:
Fair warning, the price absolutely will go up in 2010. So if you think you might need to file your CV — that is, make it searchable by hiring managers — any time in the next year, consider jumping on this offer before January 1.
This looks quite unfair to SO's true friends, the early adopters. Considering the fact that there's a loophole (taking advantage of the 90-day money back guarantee and refiling with the new pricing), I think it makes sense to promote the original accounts to the new lifetime offer.