Can dataclips' queries in Postgres database on Heroku be shared?

Can dataclips be displayed in the browser?

Is it possible to download a dataclip in the XLS format?

To create a dataclip, is it necessary to access https://dataclips.heroku.com?

Are dataclips recommended for API prototyping?

Can you see the results in the JSON format when adding .json to the dataclip URL?

Are dataclips that are shared on Google Drive never updated?

Can dataclips return an infinite set of lines?

Can you switch the dataclip to another Postgres database at any time?

Is fork a nice feature when you want to make a copy of a dataclip?