Recently I have been getting popups on my iPad2 when using Safari. They say:
Increase database size?
Do you want to allow "https://mobile.twitter.com" to use up to 10 MB storage on your iPad?
where Cancel and Increase are buttons.
This popup just occurred five times in succession. I have seen it for Twitter (as shown here) but also (I think) for other sites (Gmail?).
Is there any way to prevent this? Or should I use another browser?