i dont want to start any polemics here but you shouldn't open 2 threads with the same exact content (which is pretty much less than one full line) asking things as it's a due.
The reasons could be pretty much infinite but that doesnt matter very much... as a matter of fact if you are pretty desperate to look for mangascans you can browse the net, go on some p2p, go on mIRC or any other way to look for it.
Thankfully StopTazmo is a free forum where you can freely download mangas and discuss, but it's not like they live with the sole purpose of uploading mangas as soon as they get out.
Patience is the key and if you dont find any manga or the manga you like isn't being updated you can alwais read and partecipate to the forum discussions...
All that we see or seems, is but a dream within within a dream.