lol its in a tiny little pot? How did you guys not notice that u high?
i cant even begin to describe how uninformed you are......
now as for that picture of majeks plant, that's a beauty, but you shouldn't expect that on your first grow either, its a solid 3 times the size of my soil plants i have going right now (granted they are like 5 inches tall at about 6 nodes) and i haven't done TOO badly so far (not counting my current pH issue)....
looks like over watering and POSSIBLY (i may get ringed for this) a stunted/runt seed. imho id pull it out, and start anew anyways.... just me though.
-edit- i cant stress this enough, you do NOT need to transplant it yet. i brought mine up to almost its second node before i removed mine from the same size jiffy pot you are using (well, stuck it into a bigger pot for that matter, trimmed some of the cup out after it was settled and watered). at that size it just couldn't have the root system necessary to be rootbound, you would have a tuft of root out the bottom if it were (or at least the taproot protruding). there was a popular thread made by someone (for the life of me cant remember who, but he was pretty well known) who grew some amazing buds out of a party cup all the way though.