[waterlesscloud]

Facebook has about a million times stronger lock-in though.

Changing my primary search engine requires no effort at all on my point, and I lose practically nothing by doing so.

Gmail is probably Google's most-likely-to-last product.

[rmc]

Social Network sites have come and gone, e.g. MySpace, Bebo, etc. Lock-in to social network sites isn't so big a deal.

Also, people might want to change from Facebook, now that their employers and parents are on it.