Current advancement of mobile tech which allows people to surf the net and do more than browsing, we get to record videos, take pictures, send mails or files instantly to the web.
With such convenience, comes another issue, censorship and restrictions.
Sometimes this can be applied by a country's admin or the ISP just with a little solid evidence of "breaking the law", not even broke....yet.
The censorship can be used as a effective method to block out unwanted or bad web sites, but at the same time can be a political tool or propaganda. For example, China with the great firewall or some western countries with laws that prohibits file sharing or P2P services or even videos of truth gets altered, modified, falsified and blocked out from the public's view or knowledge. The internet has become a new playground for the modern battlefield since 1990s and got hotter after the 2K, lol.
Lets see how it can impact alot on our lives :
Start with the most basic need for the internet then the downside of it,
Knowledge / News, It used to be a unbiased format for delivering news to the people with wide audience from all country, with various constructive discussion. Again, being easily altered and falsify without proper or real source it can be doing a devastating effect on the public like using scare tactics for various purposes.
Entertainment, used to be a medium that brings international entertainment to one cable. Nowadays, custom tailored to selected audience in selected country thus creating the wall around the people instead of bridges.
Work efficiency, it usually helps encourage less usage of paper for reprinting purposes and spreading works across the globe easily and working anywhere. But this again gets affected when entertainment can be accessed easily, which then comes those who are less computer literate that exposes company secret to the competitions accidentally*.
Information/data sharing, back then internet is a place for sharing pure creativity and self-improvements. Somehow, the world isn't filled with a 100% of these people. Its filled with people who wanted instant fame and attention thus sharing stuffs that isn't supposed to be sharing or stuffs not "cool" at all.
Ok, those are few of the effect of the internet on our lives and there's more of it, depending of what we're talking about, this is just a general view on things about it. The censorship comes in and does it job to filter out those unwanted stuffs, ie like mad porns or accidentally exposed porn (dumbazz), falsified news webs, again more crap videos, and other illegal stuffs. Fine with that, not much of effect. But it's a two sided coin that is able to help or destroy.
Most massive impact is on knowledge/news, where politics battle across the web with false accusation, image destroying battle for votes or anything that crosses the word "politics".