el # and lomapaseo,
There are occasions where, me too, I briefly lift my leg against the fire hydrant of a particular subject to leave a trace, without having anything significant to say.
The reason is, that PPRuNe lacks the simple function (which exists in many other forums) to be able to subscribe (for email notification) to a thread without first having posted in it at least once.
There are threads I like to follow, without necessarily having anything to contribute myself. Having to post a brief pointless remark to subscribe annoys me, but it's the only way.
CJ