I've 'signed' several of my questions (across the SE platform) like so:
Thanks for any help or insights, I appreciate it!
or something akin that, sometimes along with my name. My reasoning behind this is that someone is taking a fairly significant chunk of time to help me out, and I want to let them know I really do appreciate it (this feeling is compounded by the fact that I'm relatively inexperienced, so it's not often I can give back by answering questions). However, more often than not, someone edits this out. Not that I really have any problem with it, I'm just wondering what the reasoning behind it is.