L'URL partagé sur Twitter comporte une chaîne de requête

[quote="Idan, post:3, topic:47446]
I prefer the links to be plain for crawlers, because canonical links are not always obeyed by Google crawler. It can be done using hash
[/quote]

If you hash the name in some way, you’re still not getting a “clean” URL for Google to index. Also, do you have any authoritative source for the suggestion that the googlebot doesn’t always respect canonical URLs? That would be something of a bug in Google’s crawler, and something that could be reported to Google and fixed.

[quote="Idan, post:3, topic:47446]
and send to the server via webservice, instead of doing t on the server by reading the query string.
[/quote]

I don’t understand what you mean by this. If you mean that the fact that the link was clicked could be sent to the server via JavaScript, then no, it can’t, because it’s pretty rare for people to be able to include active content in the links they post elsewhere.

[quote="Idan, post:3, topic:47446]
And regarding the link to the post, you better off using the userId, not the username.
[/quote]

Why?