[Piskvorrr]

Uh, nothing? I'm very happy with my desktop apps which keep on working when the umbilical cord to the Central Brain of Mankind is severed, thankyouverymuch. As you have noted, Dropbox keeps my files nicely synced even through spotty connections - but the files don't disappear when the link inevitably drops (yeah, yeah, 99.99999% uptime, complete 4G coverage, yada yada yada; pull the other one).

Quite the opposite - using various web interfaces for e-mail drove me back to Thunderbird: hey look, it can search messages without any network connection at all (le gasp!).

Of course, I'm all for using appropriate tools: e-mailing a collaborative work around is very much like trying to use a hammer as a screwdriver. But for single-user tasks, web apps are definitely worse, IMNSHO.

Disclaimer: I'm not a representative sample, nor do I play one on Youtube.