I often find it useful for the OP of a thread to “wrap it up” with a final closing thought ... so that the thread, when read months and years later by someone else, does remain useful to that person.

For example, it does no good at all to stumble-upon a thread which describes exactly the problem I am now having, and the thread simply ends with “I fixed it!” without re-capping how and why.   Or, it says, “Sorry!   I found the answe!” without bothering to mention where.   (Or, it gives a hyperlink to a thread that is “long-since dead, now that it’s five years later” without giving a brief synopsis of what (used to be) found there.)   It’s also problematic when the thread simply “drifts off into silence.”

When you are writing a thread to get an answer, write the thread as a resource, built to last.   Clearly state what the problem is (using <readmore> and <code> tags appropriately, please), and, when a solution is reached, briefly re-cap the matter and bring it to a close.   Try to give Gentle Reader Five Years From Now what she needs, too.   It’s perfectly social to say, “thank you!” at the close.   (“You’re welcome.™”)