Thank you for your help, your answer has indicated some questions. 
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From “Display requirements”: “No other social or third party actions may be attached to a Tweet.” So my “hide user” link violates this rule (see on the screenshot). Did I understand right?
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From “Display requirements”: “[Don’t] Modify Tweet text.” Does it violate this rule if I change an emoji to its text representation (
=> “:joy”)?
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Is there an official way to ask for checking my application? I want to follow the “Be a Good Partner to Twitter” rule and avoid all the mistakes I can do without knowing perfectly the expectations.
By the way my application does not too much:
- It reads the
statuses/home_timeline API request (users can register with OAuth).
- It selects the tweets with links.
- It reads the pagetitle and the favicon of the founded links with a simple webscraping method.
- And finally it displays the links with the corresponding tweets.
There is a highlighting feature, and the user can setup an email address and a time to get all that links and tweets in email (it looks like very similar to the screenshot).
I think some people might find it useful, but I don’t want do working on something which I must close because of misreading some rules…