Why can't I login using my facebook, twitter or google account?

As a result of the changes to the safe harbor law between America and Europe, logging in through one of these social networks is currently not available.

Is sketchmouse free to use?

Yes, sketchmouse is completely free to use!

How can I tag my snippet?

A snippet can be tagged if the category (language) it is placed under is also included in the snippets title. For example your snippets title may be: Hello World - My PHP Snippet and you placed this under the language PHP. If it is set to public the snippet will be tagged under PHP and visible for all users.