Such as here: How to move Applications from phone to SD Card?
There seems to have been a sudden increase, or is this normal?
More Google Juice?
Site mentioned in a popular discussion forum as a place to get good answers?
A lot of people new to Android? (Considering the apparent great popularity of the Nexus 4/7/10 and the latest Samsung Galaxy, this actually seems most likely.)
I don't know that we can ever know. It seems to happen occasionally. Just downvote and/or flag and/or vote to close and/or vote to delete as appropriate and move on.