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Найдено на JavaScript SDK http://developers.facebook.com/docs/reference/javascript/Асинхронная ИЛИ Синхронная загрузка лучше?
"...
Asynchronous Loading
--------------------------------
This code loads the SDK asynchronously so it does not block loading other
elements of your page. This is particularly important to **ensure fast page
loads for users and SEO robots**.
Synchronous Loading
--------------------------------
It is possible to load the SDK synchronously which may be useful for
debugging, but this method is not recommended for typical use. Synchronous
operations will block the web page, resulting in worse performance and a
slower user experience. This **may also negatively impact SEO due to the
increased slowness perceived by robots and crawler**s. ..."
Итак, что одна из этих утверждений верно?
THANKS DMCS! :-) –