Feel free writing me vs Be free writing me

Some examples from the web:

• Feel free to join us and fill the gap by writing documentation for GIMP. For more information, subscribe to our Mailing list. Generally, it's a good idea to check the GIMP project page.
• It's also a free writing lesson.
• All these pages are a product of my free writing.
• Feel free to join us upstairs.
• But feel free to ask any personal questions.
• Feel free to check your list twice.
• Feel free to use weapons or anything else.
• Feel free to tell him that during your next chitchat.
• You can feel free to call me, night or day.
• But feel free to commandeer one of Hand's vehicles.
• Feel free to freshen it up.
• Feel free to light a candle.
• But feel free to tell me anyway.
• ~ Feel free to take it up with the King.
• Feel free to collect any personal items you may have left in the workspace.
• Feel free to tell him why.
• Feel free to drink on my tab.
• And Margie, feel free to move about the Cuban.
• Feel free to resume your rutting.
• Do feel free to use that exact phrase, Mr Gascoigne.

Some examples from the web:

• It's also a free writing lesson.
• All these pages are a product of my free writing.
• The trader shall provide the information in writing and free of charge.
• The paper used for the flat-rate guarantee voucher shall be free of mechanical pulp, dressed for writing purposes and weighing at least 55 g/m2.
• The paper used for the forms referred to in Article 2 shall be free of mechanical pulp and dressed for writing purposes, and shall weigh at least 55 g/m2.
• The paper used for the forms referred to in Article 2 shall be free of mechanical pulp, dressed for writing purposes and weigh at least 55 g/m2.
• 3. In particular circumstances the customs authorities may allow the declaration for free circulation in writing or by means of a data-processing technique using the normal procedure to constitute an application for authorisation, provided that:
• In particular circumstances the customs authorities may allow the declaration for free circulation in writing or by means of a data-processing technique using the normal procedure to constitute an application for authorisation, provided that:
• 2. The paper used for the flat-rate guarantee voucher shall be free of mechanical pulp, dressed for writing purposes and weighing at least 55 g/m2. The paper shall have a red printed guilloche pattern background so as to reveal any falsification by mechanical or chemical means.
• 1. The paper used for the forms referred to in Article 2 shall be free of mechanical pulp, dressed for writing purposes and weigh at least 55 g/m2.
• 1. The paper used for the forms referred to in Article 2 shall be free of mechanical pulp and dressed for writing purposes, and shall weigh at least 55 g/m2.
• It is also open source (you pay for support if you want it), and since it is free it is the system of choice for people writing more free products, such as KDE.
• Member States should ensure that where an application for access to a basic payment account is refused, the payment service provider immediately informs the consumer of the grounds and the justification for such a refusal, in writing and free of charge.
• Alex read my book and started writing me months ago.
• Catching this guy who's writing me all the letters.
• He approached my brother during the trial, started writing me.
• He's been writing me letters from Iraq.
• He's been writing me poems and sending me flowers.
• They stopped writing me a while back, you know.
• That guy was always writing me up for the smallest infraction.