I have a multilanguage app, to change between a language no another I can use two resources:
<a href="?lang=fr">Switch to French</a>
<a href="/lang/fr">Switch to French</a>
For me is more interested the first one but I don't know:
- if this kind of links are followed by indexers engines.
- if a redirect will be followed by indexers engines.
Where can I learn about this issue. Regards!