Yea, but I try to ignore them.
And for the love of all that is holy, I hope nobody here NEVER EVER clicks on any links in those types of posts. It's just like feeding the trolls. Once someone does click a link, more of them invaribly show up.
Best bet would be to hit the little triangle with the exclamation point inside it above the spam post and report it. The posts will get removed by the mods and the spammers account deleted. Doing this, without making a fuss about it, brings less attention to their posts. The attention of people that will click links out of curiosity is what the spammers are usually after.
BTW: Good idea for making your own valve compressor.

You can take an old spark plug and break off the upper porceline part and hollow it out. If you're carefull, you can then hollow it out and drill and tap it to take a air hose fitting. Screw it into the spark plug hole and then you can pump air into the cylinder to hold the valve up while you pull the retainers and locks off the stem.