I know there's not some algorithm to determining my salary, but is there a rule of thumb for figuring it out.

Would an average of 1 & 2 result in a good valuation? I can figure out the value of my contribution almost to a T with some things, but there are other things that are a little harder to put a definite value to, i.e the copy I write for our websites.

I want to come into the meeting with research at the ready. And, thanks for bringing up the external credibility aspect. I didn't consider that, so I will have to factor that into everything.