| Length limit | 3,000 characters per post, per LinkedIn's help page. Over that, LinkedIn's help pages suggest its article format. | 280 characters per post for a standard account, per X's help page. Longer posts are an X Premium feature, so check which applies to you. |
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| Opening | One plain line that names the problem. Put the point up front in case a reader only sees the start of a long post. | The first post of the thread carries the whole claim, because it is the one people see alone. |
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| Structure | Short paragraphs with white space: what changed, the honest limit, why it exists, one question. | One idea per post, in the order a reader would ask: what, how, what is missing, why, what to do. |
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| What gets cut | Almost nothing. This is the place for the caveat and the reason. | Everything that is not the point of that one post. The caveat survives; the backstory is compressed to a line. |
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| The ask | One question the reader can answer in a comment. | One question at the end of the last post, so the replies land under the thread. |
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| Hashtags and links | Your call. The example uses none. | Your call. The example uses none. A link costs characters, so decide which post carries it. |
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