Am I supposed to pen down a novel or simply have a synopsis of my intended thoughts?
I believe every writer in here and every other site bends the pen for a reason. To speak out the minds, express a feeling, send a message or even for fun. The main aim at every start will remain to grab the attention of the reader, at least that's according to my gospel. Along the way a couple of styles will be applied to keep the reader glued to the publication since any slight sense of boredom will send him/her away and in search of another post worth to strain the eyes for.
So, how long should it be? Let me outline my belief depending on two situations or themes with the hopes that mine still won't be too long to hide my sweet tiny thighs and also not any way short to pull the non-intended admirers.

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You writing on a new product description plus a how-to note? Take your time and gather enough of the alphabets because you need them. No way a poem-sized post will instill sufficient usage braveness to a customer who is contemplating between buying your automated child feeding machine or going the tradition way, hiring an assistant.
If you are a published author (my own selfish opinion from an unpublished level) trying to pull us closer to your book launch why feed us with a million lines when you can simply 'synopsis' it and leave everything else in a suspense pot?
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New fields will always pose a tiny threat to the shepherd specially if it took long to re-visit the site.
Above is my opinion, no harm intended but of course criticism is much welcomed. Let's get talking.
@murathe.