One of the problems with social media is that no one reads beyond the 140 characters. I was asked about mobile number portability via Twitter. I provided the information via links in a blog post and then tweeted the post. I get the sense that no one went to the nuances. I am good at summarizing, but cannot give the true pros and cons in 140 characters.
The bottom line is that there must be a discernible differentiation of quality among providers for MNP to have any useful effect. On ISP blocking and related matters there was no difference between the operators.
On more conventional quality issues, the best data we have is comparative survey data for poor micro enterprises in Bangladesh, India and Sri Lanka. Don’t really get a sense of a lot of unhappiness, especially in LK.