I am familiar with Glassdoor. In a way, I am "competing" with them on Job4Dev.

Thing is, this salaryshare is a way to compare salaries with people that you already know, while Glassdoor is more of a general market analysis tool.

What I'm wondering now is how (and if) I can apply the idea of SalaryShare on Job4Dev. If you create a resume there, it already links the companies you listed as working for with the company database. Should I ask for "last compensation received", as well?

I'm currently job-hunting, so I'll take a look at Job4Dev. You probably should be asking (optional, anon) for salary data. I had no problem providing that info on Glassdoor, though I generally know around how much my friends/associates make.