Some people have been helped by the 7.1 upgrade.
I have an iPad Air. Safari crashed almost constantly until I upgraded to 7.1.
It's still is UNusable on some websites like Facebook. Safari only lasts a few minutes before it crashes.
Somewhere in this thread there's a link to provide feedback for Apple. Please find this link and submit your complaint.
Also make sure to turn on the Settings to send error logs back to Apple. Again that those instructions are in this thread somewhere.
Unfortunately it seems like we have not made enough noise to make apple pay attention and completely solve this issue. They seem to know it exists, they seem to try to patch it but people are still experiencing constant Safari crashing.
Let Apple know.