I would like to run a site using Joomla (still consider) for directory, WP for multi blog and SMF Forum. Can I make User in Joomla integrated to WP and SMF since first time registration? And once user login and log out, all the Joomla, WP and SMF do the same action. I dont know anything about coding. Can i just get a simple plugin or someone could code for me?
well, for money i'm sure someone will code it to you, but i think it is not a very good idea: joomla is very cpu killer, with wordpress it can be worse... they have security issues (because they are open source), which are always fixed in new releases, but if a new release is coming up, and you want to update, your sites coding (i mean the integration between the parts) can be go to waste, you can pay again for someone to make it work again with the newer versions etc... So if you don't want to learn coding, i think you should simply use joomla with the joomblog and fireboard plugin. You will have a blog with a great forum board. I think there is a solution too for multi blogging in joomla.
Since all three would require a bridge, I highly suggest that you just go with wordpress and drop the joomla idea. Wordpress is a very secure option, while joomla is a not so secure option. And the bridges like to break things. Lets say that wordpress releases an update that breaks the bridge between it and the forum. So people log in on joomla, go to the forum and when they go to the blog, they get logged out. Try to stay far, far away from bridges, they just cause problems. The only way to go is with full integration. That gets rid of any security issues with the bridge, and gets rid of another piece of software you have to keep updated. I personally had a joomla - smf site, and it was a freaking headache. Updates were a nightmare because something would always break. And then there is the security issue. Companies like yahoo blogs uses wordpress. No big companies like yahoo use joomla - and there is a reason for that.