Abdullah Abdullah is going to boycott the run off in Afghanistan.
OK, I'll get right to the point. I've always thought that boycotting elections was a sign of weakness. Why boycott an election if you think you're in a strong position? Even if it's going to be rigged, you get your people out there, rev them up, and set up a wave of protests against the rigged election like happened in Iran recently. By boycotting the election you are essentially saying that the best chance you have of getting attention is by quitting. That's not a sign of strength.
Abdullah Abdullah looked very strong after Karzai was forced to participate in the run off. But by pulling out, it makes it look like he expected to lose and expected that his supporters would not support him in challenging the outcome.
It's unfortunate that Abdullah has done this to put it mildly. By doing this he implicitly admits that Karzai really is the stronger candidate but publicly acts to undermine his legitimacy. I can't see how you could justify this as being good for the country except if you think that bringing down the entire democratic structure (such as it is) is preferable to working to reform it.