So, in the case of the "Need a tachometer calibrator circuit" post, which is apparently self-answered, it strikes me, in this case, that it is, in fact, an "Answered" thread.
Good to see the link back. I initially thought you'd also removed the 'Watched threads' link; then I spotted you'd shuffled it to the left. The present layout of the links seems more logical.
On a similar note, didn't we used to have a "your posts" link in the header bar? Lately I've been having to go to my name in the top right and select "your content". I wonder if you might be able to put that one back next, when you have time?