Si il est essentiel de mettre un point à la fin de chaque phrase, pourquoi ne pas prévoir un test qui l'ajoute automatiquement dans la transaction de validation après saisie de la phrase, ou tout au moins qui signale qu'un point est manquant ?

actually, around 400 languages are spoken in India...
What about the languages spoken in both Pakistan and India ? And Bangladesh and India ? And Sri Lanka and India ?...Should Tibetan also be represented by the People's Republic of China's flag ?!

The idea that a language should equate a flag is at the heart of most wars as it has been over thousands of years...

There's a bug on the profile details: I can't set a birth year before 1970. Is this place age-segregated ?

But what's the point if "my" sentences remain mine and only mine, instead of becoming part of the lot ?
You mean we're all doing work in our corner. For what purpose ?

A sentence I added yesterday cannot yet be found. Is that normal ?
It is quite frustrating not to see the result of one's work...

As for me, I will just not bother with retranslations anymore, they're just a waste of time!

Already we see that direct translations from l1 to l2 and to l3 end up with 2 sentences in l2 and l3 that don't match in most cases, so the discrepancy is just too important.
Subsequently, I think retranslations, that compound theses discrepancies, shouldn't simply appear on the same sentence detail. Retranslations are just different sentences altogether when they happen to make any sense at all...

I think there is a massive problem with the system: The absence of a "pivot" sentence.
In effect, I see numerous cases when a sentence s1 is given in language l1 then translated into s2 in l2, then retranslated from s2 in l1 resulting in s1' and re-retranslated in l3, etc...this is endless, because s1, s1', s1''... are all different...
This happens all the time when there are no one-to-one translation or words don't correspond 100% and the meaning slips slowly from one translation to the next, which happens actually in a majority of the cases because no 2 words ever perfectly match in 2 differnet languages...

the response time is lagging terribly...

et que se passe-t-il quand le robot détecte un conflit de traductions ?

Je comprends qu'un contrôle de l'apport en masse est nécessaire, bien sûr.
Dans quel format voulez-vous les traductions ?

est-il possible d'importer des phrases "en masse" ?
Je dispose d'environ 4000 phrases français/allemand

Que se passe-t-il si une même phrase dans une même langue est créée plusieurs fois par plusieurs contributeurs lors de traductions à partir de langues différentes ? Est-ce que Tatoeba opère le rapprochement automatique ?

no, tags should not be kept inEnglish. Tags are tags. They're user-defined according to need and it's an international project...
My view is actually that tags are irrelevant, but that's another issue...

OK. Je souhaite participer. Je peux contribuer en français/anglais/allemand/néerlandais.
Qu'est-ce que l'UTC ?

a name and a descriptive word are quite different entities..."Project" definitely qualifies your project as an English-language one. It thus uselessly deters non-English speakers, creating a bias in your contributors representation. Is that what you're seeking ?

comment est-on informé qu'une traduction est validée ?
Je viens de créer une phrase et sa traduction et je ne la retrouve pas quand je recherche un mot-clé...

you should start with removing the english word 'Project' from your logo...That would help!

Il n'empêche, la grande majorité de ce que je vois ici est en anglais et les quelques phrases en français sont incorrectes...
Exemple, dans la rubrique "Astuces": "Ici vous pouvez DEMANDER des questions..."
En français, on ne "demande" pas des questions, on les "'pose".

How come everything here is in English in this "multilingual" project ?!?