I just joined the BOINC project yesterday. I created my BOINCstats/BAM! accounts today for ease of project management. However, I noticed that I have 4 dummy projects called "My projects" showing on the Project List (http://boincstats.com/bam/projects.php) page. How can I remove those?

I have them as well, they are title repeats after a bunch of lines, so that i still know what's where, like in the stats lists after 25 lines.
It's not after 25 lines but more often, but not as often in my list as in yours.

Oh, they're just headers then. That makes sense. There're way too many, though, for my project list since I only currently have 4 projects going.

They occur in the exact same positions as the headers on the Sign up for Projects page, but because the My Projects page only shows the projects you've actually signed up for, they will be close together unless you have been an active member of every BOINC project.

A user who has just signed up, and consequently has no active projects, would see only the four headers on their My Projects page.