Patricia I agree that Tweeting constantly (or spdnnieg too much time on other types of social media, in net cafes or taking video/photos constantly, as Inga says) can be detrimental to your experience. However, I think Twitter can be a great tool for finding out about things happening in the places you visit and for meeting other travellers that you might not otherwise get to. We tend to shed our inhibitions a bit more online. So I think it needs to be balanced, not necessarily eliminated all together. I find it hard to limit my Twitter usage when at home hopefully travel will make this easier. Though I just bought a netbook today for our upcoming travels I'm hoping to just use during rest time. Maybe easier said than done?